diff --git a/Cargo.lock b/Cargo.lock
index 5e03df182d5..ee14093c660 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -454,6 +454,14 @@ dependencies = [
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cmake"
 version = "0.1.29"
@@ -603,6 +611,18 @@ dependencies = [
  "build_const 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-epoch 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "crossbeam-deque"
 version = "0.2.0"
@@ -626,6 +646,19 @@ dependencies = [
  "scopeguard 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "crossbeam-epoch"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "arrayvec 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.2.2"
@@ -634,6 +667,11 @@ dependencies = [
  "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "cssparser"
 version = "0.24.0"
@@ -1629,6 +1667,23 @@ dependencies = [
  "uuid 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ipc-channel"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bincode 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-channel 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mio 0.6.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uuid 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "itertools"
 version = "0.7.6"
@@ -2750,6 +2805,23 @@ dependencies = [
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "range"
 version = "0.0.1"
@@ -2778,7 +2850,7 @@ dependencies = [
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3196,7 +3268,7 @@ dependencies = [
 [[package]]
 name = "servo-media"
 version = "0.1.0"
-source = "git+https://github.com/servo/media#6ecac1c6259b3995e8d6a368e49777e5c2d398ae"
+source = "git+https://github.com/servo/media#44ad355b020168e78ab32db2c6f5286e7db2ba77"
 dependencies = [
  "servo-media-audio 0.1.0 (git+https://github.com/servo/media)",
  "servo-media-gstreamer 0.1.0 (git+https://github.com/servo/media)",
@@ -3206,7 +3278,7 @@ dependencies = [
 [[package]]
 name = "servo-media-audio"
 version = "0.1.0"
-source = "git+https://github.com/servo/media#6ecac1c6259b3995e8d6a368e49777e5c2d398ae"
+source = "git+https://github.com/servo/media#44ad355b020168e78ab32db2c6f5286e7db2ba77"
 dependencies = [
  "byte-slice-cast 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3219,7 +3291,7 @@ dependencies = [
 [[package]]
 name = "servo-media-gstreamer"
 version = "0.1.0"
-source = "git+https://github.com/servo/media#6ecac1c6259b3995e8d6a368e49777e5c2d398ae"
+source = "git+https://github.com/servo/media#44ad355b020168e78ab32db2c6f5286e7db2ba77"
 dependencies = [
  "byte-slice-cast 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3227,7 +3299,7 @@ dependencies = [
  "gstreamer-app 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-audio 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "gstreamer-player 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "ipc-channel 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ipc-channel 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "servo-media-audio 0.1.0 (git+https://github.com/servo/media)",
  "servo-media-player 0.1.0 (git+https://github.com/servo/media)",
@@ -3237,9 +3309,9 @@ dependencies = [
 [[package]]
 name = "servo-media-player"
 version = "0.1.0"
-source = "git+https://github.com/servo/media#6ecac1c6259b3995e8d6a368e49777e5c2d398ae"
+source = "git+https://github.com/servo/media#44ad355b020168e78ab32db2c6f5286e7db2ba77"
 dependencies = [
- "ipc-channel 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ipc-channel 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3323,7 +3395,7 @@ dependencies = [
 [[package]]
 name = "servo_media_derive"
 version = "0.1.0"
-source = "git+https://github.com/servo/media#6ecac1c6259b3995e8d6a368e49777e5c2d398ae"
+source = "git+https://github.com/servo/media#44ad355b020168e78ab32db2c6f5286e7db2ba77"
 dependencies = [
  "quote 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4279,6 +4351,7 @@ dependencies = [
 "checksum clap 2.28.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dc34bf7d5d66268b466b9852bca925ec1d2650654dab4da081e63fd230145c2e"
 "checksum clipboard 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "b9b4623b47d8637fc9d47564583d4cc01eb8c8e34e26b2bf348bf4b036acb657"
 "checksum clipboard-win 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "14cc3e6c075926b96490d5f90d4a5af7be8012a4d8a8698e619655085a7641a3"
+"checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum cmake 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)" = "56d741ea7a69e577f6d06b36b7dff4738f680593dc27a701ffa8506b73ce28bb"
 "checksum cocoa 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f5cd1afb83b2de9c41e5dfedb2bcccb779d433b958404876009ae4b01746ff23"
 "checksum color_quant 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a475fc4af42d83d28adf72968d9bcfaf035a1a9381642d8e85d8a04957767b0d"
@@ -4289,9 +4362,12 @@ dependencies = [
 "checksum core-graphics 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "92801c908ea6301ae619ed842a72e01098085fc321b9c2f3f833dad555bba055"
 "checksum core-text 11.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "157ff38a92496dc676ce36d9124554e9ac66f1c1039f952690ac64f71cfa5968"
 "checksum crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d663548de7f5cca343f1e0a48d14dcfb0e9eb4e079ec58883b7251539fa10aeb"
+"checksum crossbeam-channel 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6c0a94250b0278d7fc5a894c3d276b11ea164edc8bf8feb10ca1ea517b44a649"
 "checksum crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f739f8c5363aca78cfb059edf753d8f0d36908c348f3d8d1503f03d8b75d9cf3"
 "checksum crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "927121f5407de9956180ff5e936fe3cf4324279280001cd56b669d28ee7e9150"
+"checksum crossbeam-epoch 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "30fecfcac6abfef8771151f8be4abc9e4edc112c2bcb233314cafde2680536e9"
 "checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
+"checksum crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "677d453a17e8bd2b913fa38e8b9cf04bcdbb5be790aa294f2389661d72036015"
 "checksum cssparser 0.24.0 (registry+https://github.com/rust-lang/crates.io-index)" = "495beddc39b1987b8e9f029354eccbd5ef88eb5f1cd24badb764dce338acf2e0"
 "checksum cssparser-macros 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f3a5383ae18dbfdeb569ed62019f5bddb2a95cd2d3833313c475a0d014777805"
 "checksum darling 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2a78af487e4eb8f4421a1770687b328af6bb4494ca93435210678c6eea875c11"
@@ -4376,6 +4452,7 @@ dependencies = [
 "checksum io-surface 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5f9a33981dff54baaff80f4decb487a65d148a3c00facc97820d0f09128f74dd"
 "checksum iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe6e417e7d0975db6512b90796e8ce223145ac4e33c377e4a42882a0e88bb08"
 "checksum ipc-channel 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "db9daf099728ac5390c73f54e6e3708f0c514d2b51f24373830f568702eadfca"
+"checksum ipc-channel 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dd75debad4ffd295c00c6e3634d254df30050b0837a85e5cd039ac424365f24a"
 "checksum itertools 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "b07332223953b5051bceb67e8c4700aa65291535568e1f12408c43c4a42c0394"
 "checksum itoa 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c069bbec61e1ca5a596166e55dfe4773ff745c3d16b700013bcaff9a6df2c682"
 "checksum jemalloc-sys 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "479294d130502fada93c7a957e8d059b632b03d6204aca37af557dee947f30a9"
@@ -4467,6 +4544,8 @@ dependencies = [
 "checksum quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e44651a0dc4cdd99f71c83b561e221f714912d11af1a4dff0631f923d53af035"
 "checksum rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)" = "15a732abf9d20f0ad8eeb6f909bf6868722d9a06e1e50802b6a70351f40b4eb1"
 "checksum rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "eba5f8cb59cc50ed56be8880a5c7b496bfd9bd26394e176bc67884094145c2c5"
+"checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
+"checksum rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "edecf0f94da5551fc9b492093e30b041a891657db7940ee221f9d2f66e82eef2"
 "checksum rayon 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "485541959c8ecc49865526fe6c4de9653dd6e60d829d6edf0be228167b60372d"
 "checksum rayon-core 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9d24ad214285a7729b174ed6d3bcfcb80177807f959d95fafd5bfc5c4f201ac8"
 "checksum redox_syscall 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "29dbdfd4b9df8ab31dec47c6087b7b13cbf4a776f335e4de8efba8288dda075b"
diff --git a/components/script/dom/audiobuffer.rs b/components/script/dom/audiobuffer.rs
index 8cf3bb6648f..761bcde404b 100644
--- a/components/script/dom/audiobuffer.rs
+++ b/components/script/dom/audiobuffer.rs
@@ -64,7 +64,7 @@ impl AudioBuffer {
         number_of_channels: u32,
         length: u32,
         sample_rate: f32,
-        initial_data: Option<&[f32]>,
+        initial_data: Option<&[Vec<f32>]>,
     ) -> DomRoot<AudioBuffer> {
         let buffer = AudioBuffer::new_inherited(number_of_channels, length, sample_rate);
         let buffer = reflect_dom_object(Box::new(buffer), global, AudioBufferBinding::Wrap);
@@ -93,20 +93,19 @@ impl AudioBuffer {
     }
 
     #[allow(unsafe_code)]
-    pub fn set_channels(&self, initial_data: Option<&[f32]>) {
+    pub fn set_channels(&self, initial_data: Option<&[Vec<f32>]>) {
         let global = self.global();
         let cx = global.get_cx();
         let _ac = JSAutoCompartment::new(cx, global.reflector().get_jsobject().get());
         let chans = self.js_channels.borrow_mut();
         for channel in 0..self.number_of_channels {
             rooted!(in (cx) let mut array = ptr::null_mut::<JSObject>());
-            let offset = (channel * self.length) as usize;
             match initial_data {
                 Some(data) => {
                     let _ = unsafe {
                         Float32Array::create(
                             cx,
-                            CreateWith::Slice(&data[offset..offset + (self.length as usize) - 1]),
+                            CreateWith::Slice(data[channel as usize].as_slice()),
                             array.handle_mut(),
                         )
                     };
diff --git a/components/script/dom/baseaudiocontext.rs b/components/script/dom/baseaudiocontext.rs
index 8cd9afa00ce..dbd821b64fe 100644
--- a/components/script/dom/baseaudiocontext.rs
+++ b/components/script/dom/baseaudiocontext.rs
@@ -405,6 +405,7 @@ impl BaseAudioContextMethods for BaseAudioContext {
             let audio_data = audio_data.to_vec();
             let decoded_audio = Arc::new(Mutex::new(Vec::new()));
             let decoded_audio_ = decoded_audio.clone();
+            let decoded_audio__ = decoded_audio.clone();
             let this = Trusted::new(self);
             let this_ = this.clone();
             let task_source = window.dom_manipulation_task_source();
@@ -412,15 +413,30 @@ impl BaseAudioContextMethods for BaseAudioContext {
             let canceller = window.task_canceller(TaskSourceName::DOMManipulation);
             let canceller_ = window.task_canceller(TaskSourceName::DOMManipulation);
             let callbacks = AudioDecoderCallbacks::new()
+                .ready(move |channel_count| {
+                    decoded_audio
+                        .lock()
+                        .unwrap()
+                        .resize(channel_count as usize, Vec::new());
+                })
+                .progress(move |buffer, channel| {
+                    let mut decoded_audio = decoded_audio_.lock().unwrap();
+                    decoded_audio[(channel - 1) as usize].extend_from_slice((*buffer).as_ref());
+                })
                 .eos(move || {
                     let _ = task_source.queue_with_canceller(
                         task!(audio_decode_eos: move || {
                             let this = this.root();
-                            let decoded_audio = decoded_audio.lock().unwrap();
+                            let decoded_audio = decoded_audio__.lock().unwrap();
+                            let length = if decoded_audio.len() >= 1 {
+                                decoded_audio[0].len()
+                            } else {
+                                0
+                            };
                             let buffer = AudioBuffer::new(
                                 &this.global().as_window(),
-                                1, // XXX servo-media should provide this info
-                                decoded_audio.len() as u32,
+                                decoded_audio.len() as u32 /* number of channels */,
+                                length as u32,
                                 this.sample_rate,
                                 Some(decoded_audio.as_slice()));
                             let mut resolvers = this.decode_resolvers.borrow_mut();
@@ -451,12 +467,6 @@ impl BaseAudioContextMethods for BaseAudioContext {
                         &canceller_,
                     );
                 })
-                .progress(move |buffer| {
-                    decoded_audio_
-                        .lock()
-                        .unwrap()
-                        .extend_from_slice((*buffer).as_ref());
-                })
                 .build();
             self.audio_context_impl
                 .decode_audio_data(audio_data, callbacks);
diff --git a/components/script/dom/offlineaudiocontext.rs b/components/script/dom/offlineaudiocontext.rs
index 4490d5df6f9..21376c11a4d 100644
--- a/components/script/dom/offlineaudiocontext.rs
+++ b/components/script/dom/offlineaudiocontext.rs
@@ -144,6 +144,10 @@ impl OfflineAudioContextMethods for OfflineAudioContext {
                     task!(resolve: move || {
                         let this = this.root();
                         let processed_audio = processed_audio.lock().unwrap();
+                        let processed_audio: Vec<_> = processed_audio
+                            .chunks(this.length as usize)
+                            .map(|channel| channel.to_vec())
+                            .collect();
                         let buffer = AudioBuffer::new(
                             &this.global().as_window(),
                             this.channel_count,
diff --git a/servo-tidy.toml b/servo-tidy.toml
index 01a43ffd9c0..2645cf31588 100644
--- a/servo-tidy.toml
+++ b/servo-tidy.toml
@@ -14,6 +14,7 @@ lint-scripts = [
 # which are packages allowed to use the blocked package.
 [blocked-packages]
 rand = [
+  "crossbeam-channel",
   "deque",
   "gaol",
   "hashglobe", # only uses in tests
@@ -39,6 +40,10 @@ num = [
 # Ignored packages with duplicated versions
 packages = [
   "bitflags",
+  "crossbeam-epoch",
+  "crossbeam-utils",
+  #TODO: remove ipc-channel when #21325 lands
+  "ipc-channel",
   "log",
   "rand",
   "winapi",
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-one-sample-loop.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-one-sample-loop.html.ini
index 24a3ddacde6..7072e3007b3 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-one-sample-loop.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-one-sample-loop.html.ini
@@ -8,3 +8,6 @@
   [< [one-sample-loop\] 1 out of 1 assertions were failed.]
     expected: FAIL
 
+  [X Rendered data: Expected 1 for all values but found 999 unexpected values: \n\tIndex\tActual\n\t[1\]\t0\n\t[2\]\t0\n\t[3\]\t0\n\t[4\]\t0\n\t...and 995 more errors.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html.ini
index 3ff170d3677..b5313c149bd 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiosource-time-limits.html.ini
@@ -14,3 +14,6 @@
   [X Output from AudioBufferSource.stop(1e+300): Expected 1 for all values but found 999 unexpected values: \n\tIndex\tActual\n\t[0\]\t0\n\t[1\]\t0\n\t[2\]\t0\n\t[3\]\t0\n\t...and 995 more errors.]
     expected: FAIL
 
+  [X Output from AudioBufferSource.stop(1e+300): Expected 1 for all values but found 1000 unexpected values: \n\tIndex\tActual\n\t[0\]\t0\n\t[1\]\t0\n\t[2\]\t0\n\t[3\]\t0\n\t...and 996 more errors.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/buffer-resampling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/buffer-resampling.html.ini
index 331dfa600d8..1ec6a000047 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/buffer-resampling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/buffer-resampling.html.ini
@@ -11,3 +11,6 @@
   [X Interpolated sine wave does not equal [0,0.05756402388215065,0.11493714898824692,0.17192909121513367,0.22835086286067963,0.28401535749435425,0.3387379050254822,0.3923371136188507,0.44463518261909485,0.4954586327075958,0.5446390509605408,0.5920131802558899,0.6374239921569824,0.680720865726471,0.7217602133750916,0.760405957698822...\] with an element-wise tolerance of {"absoluteThreshold":0.090348,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[2\]\t0.0000000000000000e+0\t1.1493714898824692e-1\t1.1493714898824692e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[3\]\t0.0000000000000000e+0\t1.7192909121513367e-1\t1.7192909121513367e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[4\]\t0.0000000000000000e+0\t2.2835086286067963e-1\t2.2835086286067963e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[5\]\t0.0000000000000000e+0\t2.8401535749435425e-1\t2.8401535749435425e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[6\]\t0.0000000000000000e+0\t3.3873790502548218e-1\t3.3873790502548218e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t...and 476 more errors.\n\tMax AbsError of 1.0000000000000000e+0 at index of 300.\n\t[300\]\t0.0000000000000000e+0\t-1.0000000000000000e+0\t1.0000000000000000e+0\t1.0000000000000000e+0\t9.0347999999999998e-2\n\tMax RelError of 1.0000000000000000e+0 at index of 2.\n]
     expected: FAIL
 
+  [X Interpolated sine wave does not equal [0,0.05756402388215065,0.11493714898824692,0.17192909121513367,0.22835086286067963,0.28401535749435425,0.3387379050254822,0.3923371136188507,0.44463518261909485,0.4954586327075958,0.5446390509605408,0.5920131802558899,0.6374239921569824,0.680720865726471,0.7217602133750916,0.760405957698822...\] with an element-wise tolerance of {"absoluteThreshold":0.090348,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[2\]\t0.0000000000000000e+0\t1.1493714898824692e-1\t1.1493714898824692e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[3\]\t0.0000000000000000e+0\t1.7192909121513367e-1\t1.7192909121513367e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[4\]\t0.0000000000000000e+0\t2.2835086286067963e-1\t2.2835086286067963e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[5\]\t0.0000000000000000e+0\t2.8401535749435425e-1\t2.8401535749435425e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t[6\]\t0.0000000000000000e+0\t3.3873790502548218e-1\t3.3873790502548218e-1\t1.0000000000000000e+0\t9.0347999999999998e-2\n\t...and 477 more errors.\n\tMax AbsError of 1.0000000000000000e+0 at index of 300.\n\t[300\]\t0.0000000000000000e+0\t-1.0000000000000000e+0\t1.0000000000000000e+0\t1.0000000000000000e+0\t9.0347999999999998e-2\n\tMax RelError of 1.0000000000000000e+0 at index of 2.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sample-accurate-scheduling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sample-accurate-scheduling.html.ini
index 6f744db6f5b..3a1b725b3bc 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sample-accurate-scheduling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sample-accurate-scheduling.html.ini
@@ -11,3 +11,9 @@
   [< [test\] 2 out of 4 assertions were failed.]
     expected: FAIL
 
+  [< [test\] 1 out of 3 assertions were failed.]
+    expected: FAIL
+
+  [X Number of impulses found is not equal to 9. Got 1.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-oscillatornode-interface/detune-limiting.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-oscillatornode-interface/detune-limiting.html.ini
index f4a1da814f3..7386e31980e 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-oscillatornode-interface/detune-limiting.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-oscillatornode-interface/detune-limiting.html.ini
@@ -17,3 +17,12 @@
   [X Osc(freq: 44100.00390625) output: Expected 0 for all values but found 5510 unexpected values: \n\tIndex\tActual\n\t[1\]\t5.565462970480439e-7\n\t[2\]\t0.0000011130925940960879\n\t[3\]\t0.0000016696390048309695\n\t[4\]\t0.0000022261851881921757\n\t...and 5506 more errors.]
     expected: FAIL
 
+  [X osc[5:\]: Expected 0 for all values but found 5507 unexpected values: \n\tIndex\tActual\n\t[0\]\t0.0007123792311176658\n\t[1\]\t0.0008548550540581346\n\t[2\]\t0.0009973308769986033\n\t[3\]\t0.0011398065835237503\n\t...and 5503 more errors.]
+    expected: FAIL
+
+  [X Osc(freq: 1, detune: 18514.189453125) output does not equal [0,5.565462970480439e-7,0.0000011130925940960879,0.0000016696390048309695,0.0000022261851881921757,0.0000027827315989270573,0.000003339278009661939,0.000003895824193023145,0.000004452370376384351,0.0000050089170144929085,0.000005565463197854115,0.000006122009381215321,0.000006678556019323878,0.000007235102202685084,0.00000779164838604629,0.000008348194569407497...\] with an element-wise tolerance of {"absoluteThreshold":0,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t1.4247585204429924e-4\t5.5654629704804393e-7\t1.4191930574725120e-4\t2.5500000000000000e+2\t0.0000000000000000e+0\n\t[2\]\t2.8495170408859849e-4\t1.1130925940960879e-6\t2.8383861149450240e-4\t2.5500000000000000e+2\t0.0000000000000000e+0\n\t[3\]\t4.2742758523672819e-4\t1.6696390048309695e-6\t4.2575794623189722e-4\t2.5500000000000000e+2\t0.0000000000000000e+0\n\t[4\]\t5.6990334996953607e-4\t2.2261851881921757e-6\t5.6767716478134389e-4\t2.5499997385318113e+2\t0.0000000000000000e+0\n\t[5\]\t7.1237923111766577e-4\t2.7827315989270573e-6\t7.0959649951873871e-4\t2.5499997908254574e+2\t0.0000000000000000e+0\n\t...and 5506 more errors.\n\tMax AbsError of 7.0388854946941137e-1 at index of 5511.\n\t[5511\]\t7.0695567131042480e-1\t3.0671218410134315e-3\t7.0388854946941137e-1\t2.2949481173425900e+2\t0.0000000000000000e+0\n\tMax RelError of 2.5500000000000000e+2 at index of 1.\n]
+    expected: FAIL
+
+  [X Osc(freq: 44100.00390625) output: Expected 0 for all values but found 5511 unexpected values: \n\tIndex\tActual\n\t[1\]\t5.565462970480439e-7\n\t[2\]\t0.0000011130925940960879\n\t[3\]\t0.0000016696390048309695\n\t[4\]\t0.0000022261851881921757\n\t...and 5507 more errors.]
+    expected: FAIL
+