adafruit_bd3491fs

CircuitPython library for the Rohm BD3491FS Audio Processor

  • Author(s): Bryan Siepert

Implementation Notes

Hardware:

Software and Dependencies:

class adafruit_bd3491fs.BD3491FS(i2c_bus)

Driver for the Rohm BD3491FS audio processor

Parameters:i2c_bus (I2C) – The I2C bus the BD3491FS is connected to.
active_input

The currently selected input. Must be an Input

This example sets A1 and A2 to the active input pair. .. code-block:: python bd3491fs.active_input = adafruit_bd3491fs.Input.A

channel_1_attenuation

The attenuation applied to channel 1 of the currently selected input pair in -dB. Maximum is -87dB. To mute set to 255 This example sets the attenuation for input channel 1 to -10dB. .. code-block:: python bd3491fs.channel_1_attenuation = 10”“

channel_2_attenuation

The attenuation applied to channel 2 of the currently selected input pair in -dB. Maximum is -87dB. To mute set to 255 This example sets the attenuation for input channel 2 to -10dB. .. code-block:: python bd3491fs.channel_2_attenuation = 10”“

input_gain

The gain applied to all inputs equally” This example sets the input gain to 10dB. .. code-block:: python bd3491fs.input_gain = adafruit_bd3491fs.Level.10_DB”“

reset()

Reset the sensor, muting the input, reducting input gain to 0dB, and the output channnel attenuation to maximum

class adafruit_bd3491fs.Input

Options for active_input

Input Input Pair
Input.A Inputs A1 and A2
Input.B Inputs B1 and B2
Input.C Inputs C1 and C2
Input.D Inputs D1 and D2
Input.E Inputs E1 and E2
Input.F Inputs F1 and F2
Input.SHORT Short inputs
Input.MUTE Mute all
class adafruit_bd3491fs.Level

Options for imput_gain

Level Value
Level.LEVEL_0DB 0dB
Level.LEVEL_2DB 2dB
Level.LEVEL_4DB 4dB
Level.LEVEL_6DB 6dB
Level.LEVEL_8DB 8dB
Level.LEVEL_10DB 10dB
Level.LEVEL_12DB 12dB
Level.LEVEL_14DB 14dB
Level.LEVEL_16DB 16dB
Level.LEVEL_20DB 20dB