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Signal path through a tunnel or what actually limits good sound?

Trying to determine criteria for good sound and looking for support to determine it better. Since decades professionals and audiophiles measure sound parameters and yet it is not possible to fully predict the sound quality […]

Wilhelm   Allgemein
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Bits are Bits ?

Recently I was testing several solutions to reproduce audio files, based on personal computers. Just to see if bits are bits. I had been using JPLay for years (with mixed results in terms of stability or […]

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Search for headphones which help me learning to identify specifics of time and phase coherent sound

Why my search for headphones?  At TestHiFi, we put ourselves onto a challenge, to drastically simplify audio measurements. That should enable any mobile phone users for reasonable audio measurements. It should be so simple, that […]

Wilhelm   Allgemein
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The Sound of Tubes ?

At TestHiFi we discuss and develop ways to measure aspects of music reproduction. Sometimes, working on my own loudspeaker projects, such aspects draw attention. About such an event I want to write this time. When […]

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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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