Imam neke pesmice koje sam skinuo sa jednog diska-kompilacije iz '97, dok MP3 nije postojao. Winamp mi prijavljuje pesme kao na prilozenoj slici, a Sound Forge kaze da je pesma 22kHz, 16 bita, stereo. Ko sad tu laze, da li je 16 ili 4 bita? Sasvim lepo zvuce za 4 bita, pa sam skroz zbunjen...
Ms Adpcm ?
- Začetnik teme voodoo_
- Datum pokretanja
Evo, nasao sam:
Short for Adaptive Differential Pulse Code Modulation, a form of pulse code modulation (PCM) that produces a digital signal with a lower bit rate than standard PCM. ADPCM produces a lower bit rate by recording only the difference between samples and adjusting the coding scale dynamically to accommodate large and small differences. Some applications use ADPCM to digitize a voice signal so voice and data can be transmitted simultaneously over a digital facility normally used only for one or the other.
ADPCM
Adaptive Differential Pulse Code Modulation
This method of encoding sound data files takes up less storage space than the regular PCM format used by WAV and AIFF files--and CD audio for that matter. ADPCM comes in more than one flavor: IMA's ADPCM, for example, is used on the Sony Mini Disc to cram more data onto a smaller platter; Microsoft ADPCM is used as part of Windows 95's canon of audio codecs.
Short for Adaptive Differential Pulse Code Modulation, a form of pulse code modulation (PCM) that produces a digital signal with a lower bit rate than standard PCM. ADPCM produces a lower bit rate by recording only the difference between samples and adjusting the coding scale dynamically to accommodate large and small differences. Some applications use ADPCM to digitize a voice signal so voice and data can be transmitted simultaneously over a digital facility normally used only for one or the other.
ADPCM
Adaptive Differential Pulse Code Modulation
This method of encoding sound data files takes up less storage space than the regular PCM format used by WAV and AIFF files--and CD audio for that matter. ADPCM comes in more than one flavor: IMA's ADPCM, for example, is used on the Sony Mini Disc to cram more data onto a smaller platter; Microsoft ADPCM is used as part of Windows 95's canon of audio codecs.
dobro, 'tedoh reci dok MP3 nije bio u siroj upotrebi 
elem, znaci li ovo gore navedeno da je ADPCM lossless kompresija? nesto mi je to jako cudno, jerbo sam jednu pesmu od 5 minuta (44.1 kHz, 16 bita) u Sound Forgeu radi testa prebacio u ADPCM (44.1 kHz, 4 bita) i dobio cetiri puta manji fajl... ako je tako, cemu onda Monkey Audio i FLAC? Pesma zvuci sasvim lepo (doduse, na ovim booljama od zvucnika), pa verujem da tu ima neki catch... a ako je lossy, moze li neko od upucenih reci koja je "destruktivnija" metoda kompresije, MP3 ili ADPCM?
elem, znaci li ovo gore navedeno da je ADPCM lossless kompresija? nesto mi je to jako cudno, jerbo sam jednu pesmu od 5 minuta (44.1 kHz, 16 bita) u Sound Forgeu radi testa prebacio u ADPCM (44.1 kHz, 4 bita) i dobio cetiri puta manji fajl... ako je tako, cemu onda Monkey Audio i FLAC? Pesma zvuci sasvim lepo (doduse, na ovim booljama od zvucnika), pa verujem da tu ima neki catch... a ako je lossy, moze li neko od upucenih reci koja je "destruktivnija" metoda kompresije, MP3 ili ADPCM?
