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How much quality of a microphone do you need for simple measurements

Simple measurements can tell you something How much quality of a microphone do you need for simple measurements? As David explained in his last blog simple distortion measurements. It is of course possible to extract relevant insights […]

Wilhelm   Allgemein
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Simple Distortion Measurements

Do simple distortion measurements make any sense? Even if taken from loudspeaker output? With simple, non-laboratory grade test instruments and environment: can we read anything interesting out of distortion measurements? I made some, using REW […]

David   Allgemein
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Flaws in audio at listening position – phase coherence or polarity variation

Theory explanation    I found the explanation of Jeff Towne: Its a phase youre going through quite understandable, therefore I refer excerpts including a listening example of it here. It’s a perplexing problem: the mystery of […]

Wilhelm   Allgemein
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Some new HiFi adventures

A Re-Visit Back to a friend and customer’s place I had a strange experience which I would like to share. And still don’t quite understand … The System is complex and very high quality : […]

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Flaws in audio at listening position – stereo channel time coherence

Theory explanation    Stereo, a method of sound reproduction We described stereo effects to some extend already in the criteria stereo capability and Frequency response channel correlation. Stereo is a method of sound reproduction that […]

Wilhelm   Allgemein
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Woofer Size

Why woofers need to be large to radiate efficiently Due to a recent discussion about efficiency and directivity: Is higher efficiency – like with horn systems – a result of higher directivity? Produced by restricting […]

David   Acoustics . Loudspeakers
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Flaws in audio at listening position – frequency group time coherence

Theory explanation    Time and phase coherence is a very complex topic, probably not yet fully researched which and how those issues directly influence or correlate to the subjective perceived sound quality. However, it is […]

Wilhelm   Allgemein
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Listening

Strange sounds Recently, I walked towards the underground station and heard a strange noise. From a construction site, hammering could be heard. But, reflected from the stations walls, the “tack, tack, tack” sound was changed […]

David   Allgemein
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Why isn’t time and phase a prominent topic in audio?

Stereo channel time and phase coherence Sound mixer or sound engineer proactively design the sound with in-phase or out-of-phase channels. More mono able sound, i.e. channels in-phase will sum-up in levels. Amplitudes of same frequencies […]

Wilhelm   Allgemein
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Time and phase coherence – live, MQA, playback, overall

This is a very complex topic. It is not fully researched which and how the issues directly influence or correlate to the subjective perceived sound quality. However the overall time and phase coherence influences the […]

Wilhelm   Allgemein
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