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Re: [Discuss-gnuradio] multi thread fft execution

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] multi thread fft execution
Date: Sat, 25 Oct 2014 10:38:37 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0
On 10/25/2014 08:26 AM, Marcus Müller wrote:


Also, sliding FFTs do look like a computational heavy load. What is the application for that? I ask because getting an fft_length FFT for every item increases item/sample rate without giving you (information-theoretically speaking) any advantage over doing one FFT ever fft_length samples.

Sliding FFTs are used to provide spectral estimates with higher temporal resolution, while sacrificing (to some extent) the overall quality of the estimate.



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