Topic: jb3 bitrate

[Brian Skalinder]

what's the difference between bitrate and sample rate?

bitrate-16 bit, 24 bit
sample rate- 44.1 KHz, 48 KHz, etc.

I don't think this is quite right.

Bit depth = word length.  Bit rate is...I forget.  Someone posted this before when I was confused about it, lemme see if I can find it...

[John R]

what's the difference between bitrate and sample rate?

bitrate-16 bit, 24 bit
sample rate- 44.1 KHz, 48 KHz, etc.

I don't think this is quite right.

Bit depth = word length.  Bit rate is...I forget.  Someone posted this before when I was confused about it, lemme see if I can find it...

 used when speaking of video or audio quality -- defines how much physical space one second of audio or video takes in bits (note: not in bytes). For example: 3 minutes of MP3 audio in 128kbit/sec CBR bitrate takes 2.81 megabytes of physical space (1,024 x 128 / 1,024 / 1,024 x 180 / .  <<< smiley should be divided by eight

[John R]

 - todd, i've got the feature figured on the jb3, always wave.  

 - brian, it must be an anomoly within notmad(i'm going to write red chair).  went back in through motmad and looked at the files.  when checking properties, it's back to normal:

audio sample rate: 44
audio sample size: 16 bit
bitrate: 1411kbps
audio format: PCM (?)

now, new head scratching.  is PCM windows media player's version of wav?

getting closer...

jr

[mgleason007]

what's the difference between bitrate and sample rate?

bitrate-16 bit, 24 bit
sample rate- 44.1 KHz, 48 KHz, etc.

Yeah ummm, I dunno what I was thinking.  Bit depth-16 bit, 24 bit.  Bitrate is, of course, how much space a file takes up per unit of time.

[mgleason007]

now, new head scratching.  is PCM windows media player's version of wav?

Possible I'm wrong here... hopefully someone will back me up.

PCM is a standard.  I can't think of an analogy (too late for me).  Wav is the file format native to windows.  Other OS's (notably Mac using aiff) use a different file type for PCM audio.

[mgleason007]

On the subject of JB3 and bitrate... is the max for the JB3 16/48?  I heard somewhere it could be tricked into doing 24/88.1 (or whatever the sample rate is) with an incorrect header and could be later corrected.  Any truth to this

[John R]

some people are recording @ 48 and changing the header in post.  i haven't heard of anyone taking it any higher, although i just did post the question to njb3tapers.

jr

[mgleason007]

some people are recording @ 48 and changing the header in post.  i haven't heard of anyone taking it any higher, although i just did post the question to njb3tapers.

jr

Cool thanks  

[F.O.Bean]

yep, now if the jb3 could handle 24/48, id upgrade to the 40GB in a heartbeat , thatd be one hell of an easy setup 480>v3>odl-312>jb3

now if only grace could/would do the optical mods

[John R]

now if only grace could/would do the optical mods

you're not on the list?

[Brian Skalinder]

On the subject of JB3 and bitrate... is the max for the JB3 16/48?  I heard somewhere it could be tricked into doing 24/88.1 (or whatever the sample rate is) with an incorrect header and could be later corrected.  Any truth to this

To clarify previous posts, the JB3 *only* records in 16-bit.  However, some people have succeeded in recording ag higher sample rates than 48kHz.  The way to do this is to send it a sample rate higher than 48kHz, say...96kHz.  The JB3 will record the file with a 48kHz header but not resample to 48kHz.  After transferring the file back to PC, it's possible to change the file header to 96kHz.

[F.O.Bean]

On the subject of JB3 and bitrate... is the max for the JB3 16/48?  I heard somewhere it could be tricked into doing 24/88.1 (or whatever the sample rate is) with an incorrect header and could be later corrected.  Any truth to this

To clarify previous posts, the JB3 *only* records in 16-bit.  However, some people have succeeded in recording ag higher sample rates than 48kHz.  The way to do this is to send it a sample rate higher than 48kHz, say...96kHz.  The JB3 will record the file with a 48kHz header but not resample to 48kHz.  After transferring the file back to PC, it's possible to change the file header to 96kHz.

im trying this right now since i have the day off

ill let ya'll know my findings w/ the newest firmware

[F.O.Bean]

im at 96k and recording so far so good, the header on the jb3 says 44.1k, and the seconds are MOVIN fast

[F.O.Bean]

the jb3 at 16/96 doesnt work, it records, but when you playback, it soundz like a message from hell, the header shows 44.1k too

im trying at 88.2 now, ill get back asap

[F.O.Bean]

HOLY SHIT, IT DOES 16/96!!!!!!!!!!

heres how, on my v3, i made the samp freq 96 and of course 16 bit, ANSR on, now heres the deal, you have to encode it back to 96 k, cause its header says 44.1, so played back normal under the 44.1k file, it soundz slow and whatnot, but in wavelab, open the normal file from the jb3, go to edit, then audio properties, and once its set to 96k, save the file, then BAM, when its saved reopen it, wala, it plays fine, however i have no clue if its a true 96k file, brian??? how would i tell???