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Post by MartinT on Apr 5, 2021 16:08:48 GMT
It's very easy to make a pink noise test curve to evaluate how your system and room are interacting. Both Spotify and Qobuz have pink noise, or there are several test CDs and records available. Use an app like Advanced Spectrum Analyser to listen to the signal and capture a screenshot. Here's mine, which doesn't surprise me at all knowing how hard I have worked on calming the upper-mid and treble end of my system after going hi-res. Not bad, a fairly clean effort and not accentuating any frequencies too much, reflecting on reasonably successful room treatment.  |
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Post by MartinT on Apr 5, 2021 16:18:29 GMT
I should have explained that pink noise is random and has equal energy per octave, making it ideal for this measurement. Don't use white noise or music.
Also, the mic in your tablet or phone won't be calibrated or particularly high quality, so the results are just an indication.
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Post by MikeMusic on Apr 5, 2021 16:28:45 GMT
For the uninitiated and hard of learning you'll have to explain a bit more
Why is that good ?
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Post by MartinT on Apr 5, 2021 16:37:58 GMT
It's a frequency response, but not one of the useless manufacturer ones generated in an anechoic chamber. A real room presents a much tougher acoustic challenge. The trick is to get it reasonably flat without huge peaks or dips.
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Post by MikeMusic on Apr 5, 2021 18:16:53 GMT
Thanks
Wonder what on earth my room looks like
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Post by MartinT on Apr 5, 2021 18:42:12 GMT
Try it and post the results here.
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Post by ant on Apr 5, 2021 19:07:54 GMT
There are a pair of plots i did on the thread 'ants system', one with a log scale and one lin scale, if you can alter the scale martin its useful to look at both plots.
Same as you, a smartphone app and the built in mic on the phone (galaxy note 9 in my case)
Broad strokes, but useful as a guide
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Post by MartinT on Apr 5, 2021 19:11:07 GMT
I've just had a look. Very smooth for in-room. You have a small bass hump as I do, pretty well controlled for the average room.  S/a by anthony cresswell, on Flickr |
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Post by MartinT on Apr 5, 2021 20:16:39 GMT
I'd be very interested in seeing other people's plots.
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