Hey Friend,
This week I got a mail from element14 that they are providing Wolfson Audio module to the participants. I haven’t received the product yet may be courier service to my area is poor.
Talking about the Wolfson Audio Card it has various features as follow
- Audio hub CODEC with integrated voice processor DSP
- Programmable audio effects and voice processing functions
- Transmit-path noise reduction and echo cancellation
- Receive-path enhancement and noise reduction
- Wind noise, sidetone and other programmable filters
- Dynamic Range Control, Fully parametric EQs
- Multi-channel asynchronous sample rate conversion
- Integrated 6/7 channel 24-bit hi-fi audio hub CODEC
- 6 ADCs, 96dB SNR microphone input (48kHz)
- 7 DACs, 113dB SNR headphone playback (48kHz)
- Audio inputs
- Up to 6 analogue or digital microphone inputs
- Single-ended or differential mic/line inputs
- Multi-purpose headphone / earpiece / line output drivers
- 2 stereo output paths
- 29mW into 32Ω load at 0.1% THD+N
- 100mW into 32Ω BTL load at 5% THD+N
- 6.5mW typical headphone playback power consumption
- Pop suppression functions
- 2.3μVRMS noise floor (A-weighted)
- Mono BTL earpiece output driver
- 2 x 2W stereo Class D speaker output drivers
- Direct drive of external haptics vibe actuators
- Two-channel digital speaker (PDM) interface
- SLIMbus
audio and control interface - 3 full digital audio interfaces
- Standard sample rates from 4kHz up to 192kHz
- Ultrasonic accessory function support
- TDM support on all AIFs
- 8 channel input and output on AIF1
- Flexible clocking, derived from MCLKn, BCLKn or SLIMbus
- 2 low-power FLLs support reference clocks down to 32kHz
- Advanced accessory detection functions
- Low-power standby mode and configurable wake-up
- Configurable functions on 5 GPIO pins
- Integrated LDO regulators and charge pumps
- Support for single 1.8V supply operation
- Small W-CSP package, 0.4mm pitch
Applications
- Smartphones and Multimedia handsets
- Tablets and Mobile Internet Devices (MID)
- General-purpose low-power audio CODEC hub
If talking about its use in our project as earlier I am using RaspBMC for implementation of Karaoke on raspberry pi. Unluckily searching on internet I found that for now it can only works on new built of raspbian. I am not sure how much it is correct. So I have to check once it arrives If it works it is good news if not then I will have to search for some different ways to implement karaoke which utilizes the new wolfson audio card
