fullAudioRecorder.kt

        val sampleRate = 48000
        val channelConfig = AudioFormat.CHANNEL_IN_MONO
        val pcm16 = AudioFormat.ENCODING_PCM_16BIT
        
        val pcmBufSize = AudioRecord.getMinBufferSize(
            sampleRate,
            channelConfig,
            pcm16
        ) * 5
        
        val fullAudioRecorder = AudioRecord.Builder()
                .setAudioPlaybackCaptureConfig(audioPlaybackCaptureConfiguration)
                .setAudioFormat(
                    AudioFormat.Builder()
                        .setSampleRate(sampleRate)
                        .setEncoding(pcm16)
                        .setChannelMask(channelConfig)
                        .build()
                )
                .setBufferSizeInBytes(pcmBufSize)
                .build()

        fullAudioRecorder.startRecording()