Monthly Archives: March 2018

The Wolfson Sound Card Noise Gate and 24 bit Data

Recently I did some measurements on the Wolfson card to get an idea of the dynamic range. When playing a 24bit file @ -100dBfs there was no output from the card. This was perplexing, as the noise floor is some … Continue reading

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Improving PSU filtering on the Wolfson Raspberry Pi Sound Card

I’ve been thinking about elegant ways to improve the PSU filtering of the Wolfson card and to ensure that any switching noise from the relatively noisy power supplies Raspberry Pi’s are usually used with is effectively¬†filtered. There’s plenty of possible … Continue reading

Posted in Engineering, Music, Streaming | 6 Comments

Cirrus / Wolfson sound card power supply noise sensitivity

I had a chance to do some quick measurements on the Wolfson card, I was curious as to how well it measured and also to see if the power supply sensitivity, referred to in the HiFi World review¬†was visible at … Continue reading

Posted in Engineering, Music | 2 Comments