AllGo offers IP licensing in the areas of multimedia, networked audio and wireless. Our IP includes embedded SDKs and high-performance DSP algorithms, which provide a unique advantage to your product. Combined with AllGo's expertise in turn-key product development and customization services, our IP offers our customer a significant time to market advantage. |
GSM Buzz Removal
Product Code: Audio-GSM-Buzz
Today’s GSM handsets use high power amplifiers to increase the communication distance with the base station. These amplifiers produce bursts of high currents at low frequencies causing the objectionable “GSM buzz” in nearby audio equipments. When a device such as an iPod accessory plays from an iPhone, an incoming GSM call can create annoying bursts of noise from the speakers if the accessory hardware is not properly shielded.
AllGo has created a software solution to reduce the effects of this GSM buzz in audio equipments. AllGo’s GSM buzz removal software can run in the DSP or MCU that is contained in the audio equipment and process the incoming audio to eliminate the buzz. This reduces the time & cost involved in hardware shielding for the audio equipment.
Typical GSM buzz waveform:
Highlights
- High performance: > 99% detection rate; Near-flawless pulse removal (> 40dB suppression)
- Practical: Consumes approx 70Mhz on Coldfire MCU when operating on 44.1kHz, stereo audio; expected to be lower on ARM9e
- Proven: Licensed to a Tier1 Auto OEM in Europe
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