diff --git a/audio_streams/src/audio_streams.rs b/audio_streams/src/audio_streams.rs
index 71e5291b08..3f8d96af2c 100644
--- a/audio_streams/src/audio_streams.rs
+++ b/audio_streams/src/audio_streams.rs
@@ -174,7 +174,6 @@ pub trait StreamSource: Send {
         format: SampleFormat,
         frame_rate: u32,
         buffer_size: usize,
-        _effects: &[StreamEffect],
     ) -> Result<
         (
             Box<dyn StreamControl>,
@@ -203,7 +202,6 @@ pub trait StreamSource: Send {
         format: SampleFormat,
         frame_rate: u32,
         buffer_size: usize,
-        _effects: &[StreamEffect],
         _ex: &Executor,
     ) -> Result<
         (
diff --git a/audio_streams/src/capture.rs b/audio_streams/src/capture.rs
index eefa1c1ccd..1aa1de2794 100644
--- a/audio_streams/src/capture.rs
+++ b/audio_streams/src/capture.rs
@@ -15,7 +15,7 @@
 //! let frame_size = num_channels * sample_format.sample_bytes();
 //!
 //! let (_, mut stream) = stream_source
-//!     .new_capture_stream(num_channels, sample_format, 48000, buffer_size, &[])?;
+//!     .new_capture_stream(num_channels, sample_format, 48000, buffer_size)?;
 //! // Capture 10 buffers of zeros.
 //! let mut buf = Vec::new();
 //! buf.resize(buffer_size * frame_size, 0xa5u8);
@@ -343,7 +343,7 @@ mod tests {
     fn sixteen_bit_stereo() {
         let mut server = NoopStreamSource::new();
         let (_, mut stream) = server
-            .new_capture_stream(2, SampleFormat::S16LE, 48000, 480, &[])
+            .new_capture_stream(2, SampleFormat::S16LE, 48000, 480)
             .unwrap();
         let mut copy_func = |b: &mut CaptureBuffer| {
             assert_eq!(b.buffer.frame_capacity(), 480);
@@ -358,7 +358,7 @@ mod tests {
     fn consumption_rate() {
         let mut server = NoopStreamSource::new();
         let (_, mut stream) = server
-            .new_capture_stream(2, SampleFormat::S16LE, 48000, 480, &[])
+            .new_capture_stream(2, SampleFormat::S16LE, 48000, 480)
             .unwrap();
         let start = Instant::now();
         {
@@ -420,7 +420,7 @@ mod tests {
         async fn this_test(ex: &Executor) {
             let mut server = NoopStreamSource::new();
             let (_, mut stream) = server
-                .new_async_capture_stream(2, SampleFormat::S16LE, 48000, 480, &[], ex)
+                .new_async_capture_stream(2, SampleFormat::S16LE, 48000, 480, ex)
                 .unwrap();
             let start = Instant::now();
             {
diff --git a/devices/src/virtio/snd/cras_backend/mod.rs b/devices/src/virtio/snd/cras_backend/mod.rs
index 98a6ca95c7..5d2cf4c237 100644
--- a/devices/src/virtio/snd/cras_backend/mod.rs
+++ b/devices/src/virtio/snd/cras_backend/mod.rs
@@ -285,7 +285,6 @@ impl<'a> StreamInfo<'a> {
                                 self.frame_rate,
                                 // See (*)
                                 self.period_bytes / frame_size,
-                                &[],
                                 &ex,
                             )
                             .map_err(Error::CreateStream)?