Method and system for handling the processing of bluetooth data during multi-path multi-rate audio processing
An audio codec in a baseband processor may be utilized for mixing audio signals received at a plurality of data sampling rates. The mixed audio signals may be up sampled to a very large sampling rate, and then down sampled to a specified sampling rate that is compatible with a Bluetooth-enabled device by utilizing an interpolator in the audio codec. The down-sampled signals may be communicated to Bluetooth-enabled devices, such as Bluetooth headsets, or Bluetooth-enabled devices with a USB interface. The interpolator may be a linear interpolator for which the audio codec may enable generation of triggering and/or coefficient signals based on the specified output sampling rate. An interpolation coefficient may be generated based on a base value associated with the specified output sampling rate. The audio codec may enable selecting the specified output sampling rate from a plurality of rates.
1. A method for signal processing, the method comprising:
mixing audio signals in an audio codec integrated within a baseband processor in a wireless device, wherein said audio signals are received in said audio codec at a plurality of data sampling rates;
up sampling said mixed audio signals to a sampling rate that is at least one order of magnitude higher than the sampling rate of each said mixed audio signals; and
down sampling said up-sampled mixed audio signals to a specified output sampling rate that is compatible with a Bluetooth-enabled device by utilizing an interpolator integrated within said audio codec.
2. The method according to claim 1 , comprising selecting said specified output sampling rate from a plurality of output sampling rates.
3. The method according to claim 1 , comprising communicating said down-sampled mixed audio signal to said Bluetooth-enabled device via a USB interface.
4. The method according to claim 1 , wherein said Bluetooth-enabled device is a Bluetooth headset communicatively coupled to said baseband processor.
5. The method according to claim 1 , comprising down sampling said mixed audio signals utilizing a linear interpolator.
6. The method according to claim 5 , comprising generating at least one signal that triggers said linear interpolator based on said specified output sampling rate.
7. The method according to claim 5 , comprising generating at least one coefficient signal to said linear interpolator based on said specified output sampling rate.
8. The method according to claim 7 , comprising generating an interpolation coefficient in said linear interpolator by utilizing said at least one coefficient signal and a base value based on said specified output sampling rate.
9. A machine-readable storage having stored thereon, a computer program having at least one code section for signal processing, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
mixing audio signals in an audio codec integrated within a baseband processor in a wireless device, wherein said audio signals are received in said audio codec at a plurality of data sampling rates;
up sampling said mixed audio signals to a sampling rate that is at least one order of magnitude higher than the sampling rate of each said mixed audio signals; and
down sampling said up-sampled mixed audio signals to a specified output sampling rate that is compatible with a Bluetooth-enabled device by utilizing an interpolator integrated within said audio codec.
10. The machine-readable storage according to claim 9 , wherein said at least one code section comprises code for selecting said specified output sampling rate from a plurality of output sampling rates.
11. The machine-readable storage according to claim 9 , wherein said at least one code section comprises code for communicating said down-sampled mixed audio signal to said Bluetooth-enabled device via a USB interface.
12. The machine-readable storage according to claim 9 , wherein said Bluetooth-enabled device is a Bluetooth headset communicatively coupled to said baseband processor.
13. The machine-readable storage according to claim 9 , wherein said at least one code section comprises code for down sampling said mixed audio signals utilizing a linear interpolator.
14. The machine-readable storage according to claim 13 , wherein said at least one code section comprises code for generating at least one signal that triggers said linear interpolator based on said specified output sampling rate.
15. The machine-readable storage according to claim 13 , wherein said at least one code section comprises code for generating at least one coefficient signal to said linear interpolator based on said specified output sampling rate.
16. The machine-readable storage according to claim 15 , wherein said at least one code section comprises code for generating an interpolation coefficient in said linear interpolator by utilizing said at least one coefficient signal and a base value based on said specified output sampling rate.
17. A system for signal processing, the system comprising:
an audio codec integrated within a baseband processor in a wireless device that enables mixing audio signals, wherein said audio signals are received in said audio codec at a plurality of data sampling rates;
said audio codec comprises an interpolator that up-samples said mixed audio signals to a sampling rate that is at least one order of magnitude higher than the sampling rate of each of said mixed audio signals; and
said audio codec further comprises an interpolator that enables down sampling said up-sampled mixed audio signals to a specified output sampling rate that is compatible with a Bluetooth-enabled device.
18. The system according to claim 17 , wherein said audio codec enables selection of said specified output sampling rate from a plurality of output sampling rates.
19. The system according to claim 17 , wherein said audio codec enables communication of said down-sampled mixed audio signal to said Bluetooth-enabled device via a USB interface.
20. The system according to claim 17 , wherein said Bluetooth-enabled device is a Bluetooth headset communicatively coupled to said baseband processor.
21. The system according to claim 17 , wherein said audio codec enables down sampling said mixed audio signals utilizing a linear interpolator.
22. The system according to claim 21 , wherein said audio codec enables generation of at least one signal that triggers said linear interpolator based on said specified output sampling rate.
23. The system according to claim 21 , wherein said audio codec enables generation of at least one coefficient signal to said linear interpolator based on said specified output sampling rate.
24. The system according to claim 23 , wherein said audio codec enables generation of an interpolation coefficient in said linear interpolator by utilizing said at least one coefficient signal and a base value based on said specified output sampling rate.