Unbalanced vocals and instruments in audio output of Bluetooth sink example (A2DP)
Posted: Tue Aug 29, 2023 11:17 pm
Hey,
I have an issue with I2s config in the context of a Bluetooth speaker project based on ESP32 and PCM5100A (along with PAM8909 as Amplifier). This is my config :
I'm able to notice a great quality of audio output but only if the Mono source in my phone (Accessibility settings on Android) is activated along with audio baalance set to 100% right or 100% left.
If mono is desactivited along with audio balance set to 50% I feel the vocals very weak and overall experience is unbalanced
.
What could be the root cause of this
?
Please find attached the wiring of the circuit
I have an issue with I2s config in the context of a Bluetooth speaker project based on ESP32 and PCM5100A (along with PAM8909 as Amplifier). This is my config :
- mode = I2S_MODE_MASTER | I2S_MODE_TX,
- .sample_rate = 441000,
- .bits_per_sample = 32,
- .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
- .communication_format = I2S_COMM_FORMAT_STAND_MSB,
- .dma_buf_count = 8,
- .dma_buf_len = 64,
- .intr_alloc_flags = 0,
- .tx_desc_auto_clear = true
If mono is desactivited along with audio balance set to 50% I feel the vocals very weak and overall experience is unbalanced
.What could be the root cause of this
?Please find attached the wiring of the circuit