Mortenhoe skrev:
Kilden kan nu også have en stor betydning. Min TDA1543 virker til at have mere aktivitet udenfor det "hørbare spektrum" end f.eks. min Aune. Dette kan ISÆR høres på bineurale lydklip.
Claus-DK skrev:Mortenhoe skrev:
Kilden kan nu også have en stor betydning. Min TDA1543 virker til at have mere aktivitet udenfor det "hørbare spektrum" end f.eks. min Aune. Dette kan ISÆR høres på bineurale lydklip.
Hvordan hører du noget der ikke er lyd ??
Why do audiophiles do not like the sound of current oversampling DACs ?
Oversampling DACs are textbook correct, right ? So they should sound perfect, no ? Well ...
While it is true that oversampling DACs are textbook correct, if you make the wrong assumptions about the human hearing system, you may end up making mistakes, even if you do the math right !
Let me give you a simple example : it is generally assumed we hear the spectrum of sounds, but can't hear the phase.
Now try "binaural beats" on Google and listen for yourself. These clearly show the phase information IS sensed, AND remains present far inside the brain.
So maybe the spectrum-only approach to DAC design is not telling the whole story...
Sample rate
Further information: 44.1 kHz
The sampling rate is adapted from that attained when recording digital audio on a PAL (or NTSC) videotape with a PCM adaptor, an earlier way of storing digital audio.[8] An audio CD can represent frequencies up to 22.05 kHz, the Nyquist frequency of the 44.1 kHz sample rate.
The selection of the sample rate was based primarily on the need to reproduce the audible frequency range of 20–20,000 Hz (20 kHz). The Nyquist–Shannon sampling theorem states that a sampling rate of more than twice the maximum frequency of the signal to be recorded is needed, resulting in a required rate of at least 40 kHz. The exact sampling rate of 44.1 kHz was inherited from a method of converting digital audio into an analog video signal for storage on U-matic video tape, which was the most affordable way to transfer data from the recording studio to the CD manufacturer at the time the CD specification was being developed
Wikipedia skrev:Sub-bass sounds are the deep, low- register pitched pitches approximately below 60 Hz and extending downward to include the lowest frequency humans can hear, assumed at about 20 Hz.
Sounds below sub-bass are called infrasound.
Sweppesfetterlein skrev:Skyldig. Jeg har ofte brugt betegnelsen uden videre at tænke over den reele betydning. For fremtiden hedder det bare dyb bas Eller noget esoterisk vrøvl der hopper ud af mine fingre. Sådan er det bare, jeg har lært at leve med det efterhånden.
Claus-DK skrev:...hvor langt ned gĂĄr en kontrabas ?? den er sĂĄ vidt jeg ved det instrument der frembringer de dybeste toner...
Claus-DK skrev:...Jeg taler om vores sanse system som ikke opfatter det jeg kaldte subbas i første indlæg, som lyd, det vil opleves som et tryk, men det er bare ikke en lyd..
Det er en grundpræmis i vores hjerner at Hz mellem ca 17-21.000 er lyd, alt uden for det vil ikke blive opfattet som værende lyd...
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