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[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Audio]

Key

Type

Description

MuteMode

DWORD

How to mute the device during no audio ouput. (see Mute Settings)

MutePortAdr

DWORD

Address to write to, if MUTE_PORTADR is used. (see Mute Settings)

MutePortSize

DWORD

Bus-width, if MUTE_PORTADR is used. (see Mute Settings)

MutePortMute

DWORD

Value to write for mute, if MUTE_PORTADR is used. (see Mute Settings)

MutePortUnMute

DWORD

Value to write for unmute, if MUTE_PORTADR is used. (see Mute Settings)

MuteGPIOPin

DWORD

GPIO-Pin to use, if MUTE_GPIOPIN is used. (see Mute Settings)

BassTreble

DWORD

Value to use for CSR1 register of UCB1400

Priority256

DWORD

priority used for driver-threads

InputSource

DWORD

Source of audio-input: 1: MIC, 2: LINE_IN

CaptureLatency

DWORD

Capture-buffer-size in milliseconds. When using VOIP-applications, reducing capture-latency might be wanted.

PlayLatency

DWORD

Play-buffer-size in milliseconds. When using VOIP-applications, reducing play-latency might be wanted.

RecordGain

DWORD

See Record Gain Register (0x1C) of UCB1400-codec. Bits 0..7 are the gain setting for the right channel; bits 8..15 for the left channel.

MicVolume

DWORD

See MIC Volume Register (0x0E) of UCB1400-codec. Set bit 6 (0x40) to enable 20dB boost

WM9715ALC

DWORD

See ALC-Registers (0x60,0x62) of WM9715L-codec. The upper 16 bits are written to Reg60h, the lower to Reg62h. Default-value if not set is 0xB0323E00.

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