more audio related work

modem/arq_session_iss.py

@@ -166,6 +166,7 @@ class ARQSessionISS(arq_session.ARQSession):
             self.confirmed_bytes = self.total_length
         elif not fallback:
             self.confirmed_bytes = self.expected_byte_offset
+
         self.log(f"IRS confirmed {self.confirmed_bytes}/{self.total_length} bytes")
 
         # check if we received an abort flag

modem/audio.py

@@ -225,7 +225,6 @@ def calculate_fft(data, fft_queue, states) -> None:
     global RMS_COUNTER, CHANNEL_BUSY_DELAY
 
     try:
-
         fftarray = np.fft.rfft(data)
 
         # Set value 0 to 1 to avoid division by zero
@@ -322,8 +321,8 @@ def calculate_fft(data, fft_queue, states) -> None:
             # erase queue if greater than 3
         if fft_queue.qsize() >= 1:
             fft_queue = queue.Queue()
-        #fft_queue.put(dfftlist[:315]) # 315 --> bandwidth 3200
-        fft_queue.put(dfftlist) # 315 --> bandwidth 3200
+        fft_queue.put(dfftlist[:315]) # 315 --> bandwidth 3200
+        #fft_queue.put(dfftlist) # 315 --> bandwidth 3200
 
     except Exception as err:
         print(f"[MDM] calculate_fft: Exception: {err}")

modem/modem.py

@@ -162,7 +162,7 @@ class RF:
                 callback=self.sd_output_audio_callback,
                 device=out_dev_index,
                 samplerate=self.AUDIO_SAMPLE_RATE,
-                blocksize=512,
+                blocksize=600,
             )
             self.sd_output_stream.start()
 
@@ -259,7 +259,7 @@ class RF:
             self.tci_module.wait_until_transmitted(audio_48k)
         else:
             # slice audio data to needed blocklength
-            block_size = 512
+            block_size = self.sd_output_stream.blocksize
             pad_length = -len(audio_48k) % block_size
             padded_data = np.pad(audio_48k, (0, pad_length), mode='constant')
             sliced_audio_data = padded_data.reshape(-1, block_size)