---

#define SAMPLE_FREQUENCY    16000
#define NUMBER_OF_CHANNELS  1
#define SAMPLE_BIT_WIDTH    16
#define BYTES_PER_SAMPLE    sizeof(int16_t)

#ifdef MY_CODE
/* Such block length provides an echo with the delay of 100 ms. */
#define SAMPLES_PER_BLOCK   ((SAMPLE_FREQUENCY / 10) * NUMBER_OF_CHANNELS)
#define ZEPHYR_AUDIO_BLOCK_COUNT ZEPHYR_AUDIO_INITIAL_BLOCKS + 32
#else
/* Such block length provides an echo with the delay of 50 ms. */
//#define SAMPLES_PER_BLOCK   ((SAMPLE_FREQUENCY / 20) * NUMBER_OF_CHANNELS)
#define SAMPLES_PER_BLOCK   ((SAMPLE_FREQUENCY / 40) * NUMBER_OF_CHANNELS)
// 34 block's per 20ms
#define ZEPHYR_AUDIO_BLOCK_COUNT ZEPHYR_AUDIO_INITIAL_BLOCKS + 32
#endif
#define ZEPHYR_AUDIO_BLOCK_SIZE  (BYTES_PER_SAMPLE * SAMPLES_PER_BLOCK)
#define ZEPHYR_AUDIO_INITIAL_BLOCKS 2

K_MEM_SLAB_DEFINE_IN_SECT_STATIC(mem_slab_rx, __dtcm_noinit_section, ZEPHYR_AUDIO_BLOCK_SIZE, ZEPHYR_AUDIO_BLOCK_COUNT, 4);
K_MEM_SLAB_DEFINE_IN_SECT_STATIC(mem_slab_tx, __dtcm_noinit_section, ZEPHYR_AUDIO_BLOCK_SIZE, ZEPHYR_AUDIO_BLOCK_COUNT, 4);