Quick fix for audio glitches in streaming. TODO fix latency.

src/auracast/multicast.py

@@ -88,7 +88,7 @@ class ModSoundDeviceAudioInput(audio_io.SoundDeviceAudioInput):
         self.counter=0
         self.max_avail=0
         self.logfile_name="available_samples.txt"
-        self.blocksize = 120
+        self.blocksize = 240
 
         if os.path.exists(self.logfile_name):
             os.remove(self.logfile_name)
@@ -99,7 +99,7 @@ class ModSoundDeviceAudioInput(audio_io.SoundDeviceAudioInput):
             channels=self._pcm_format.channels,
             dtype='int16',
             blocksize=self.blocksize,
-            latency=0.004,
+            latency=0.020,
         )
         self._stream.start()
 
@@ -114,7 +114,7 @@ class ModSoundDeviceAudioInput(audio_io.SoundDeviceAudioInput):
         """Read PCM samples from the stream."""
 
         #if self.counter % 50 == 0:
-        frame_size = frame_size + 1 # consume samples a little faster to avoid latency akkumulation
+        # frame_size = frame_size + 1 # consume samples a little faster to avoid latency akkumulation
 
         pcm_buffer, overflowed = self._stream.read(frame_size)
         if overflowed:

src/auracast/server/multicast_server.py

@@ -385,8 +385,7 @@ async def init_radio(transport: str, conf: auracast_config.AuracastConfigGroup,
             if input_device_name in dante_channels:
                 conf.auracast_sampling_rate_hz = 48000
                 # Also update octets per frame for 48000 Hz
-                if conf.octets_per_frame == 60:  # 24000 Hz setting
-                    conf.octets_per_frame = 120  # 48000 Hz setting
+                conf.octets_per_frame = 120  # 48000 Hz setting
 
         conf.qos_config.max_transport_latency_ms = int(conf.qos_config.number_of_retransmissions) * 10 + 3
 

src/misc/asound.conf

@@ -49,8 +49,8 @@ pcm.dante_asrc_shared6 {
         rate 48000
         format S16_LE
 
-        period_size 256
-        buffer_size 1024
+        period_size 240
+        buffer_size 960
     }
 
     hint { show on ; description "DEP RX (via ASRC) shared 6ch (loopback+dsnoop)" }