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About Bob11

Bob Johnson (@Bob11)

Thirty years of design engineering in the broadcasting market designing audio and video products for TV, film, and post-production professionals. Programming from 6502s and 56001 DSPs to multi-core processors and Sharcs, board layout from Bishop Graphics tape to many-layer CAD, TTL to Zynq circuit designs, it's been a wild ride.

Re: Calculating the Effective bit resolution from a .WAV recording?

Reply posted 3 years ago (02/09/2021)
Unfortunately I'm not a Matlab user so I can't check your code. However, you might want to toss the negative values first before shifting. Your results are exactly...

Re: Calculating the Effective bit resolution from a .WAV recording?

Reply posted 3 years ago (02/09/2021)
dudelsound has the right concept. Keep in mind that every bit of your signal is 6dB, and your device will have a dynamic range that defines how many bits are actually...

Re: Communication between ARM and DSP

Reply posted 3 years ago (12/15/2020)
If the DSP can be implemented in firmware blocks there's always the Xilinx Zynq product line.

Re: Understanding the Nyquist frequency when doing complex FFT

Reply posted 5 years ago (07/31/2019)
The Nyquist limit doesn't guarantee reproduction, only the lack of aliasing. Consider a sine wave of 32Hz sampled perfectly synchronously at 64Hz at the zero crossings....

Re: Learning FPGA

Reply posted 6 years ago (10/03/2018)
The learning curve for FPGA design is fairly steep simply because there are so many moving parts to an integrated whole design. FPGA design encompasses hardware,...

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