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Microphone array amplifier cuts background noise, improves voice clarity
The PowerWise LMV1088 analog dual-input microphone array amplifier from National Semiconductor reduces background acoustic noise while offering more natural voice quality and reduced power compared to DSP- or microprocessor software-based systems. Details... more »
 
CSR misses targets, remains cautious on outlook
Wireless comms chip 5b4 specialist CSR plc saw its revenues in the fourth quarter of last year increase to $232.5million from $173.3million in the corresponding period of 2006. For the whole year, sales were $848.6million, up 20 percent from $704.7 million during 2006. Details... more »
 
Spectral analysis and modulation, part 2: Power spectrum analysis
This article discusses estimation of power spectrum or spectral density using windowed FFTs and auto-correlation. It illustrates periodogram averaging with the Welsh and Bartlet periodograms. Details... more »
 
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