similar to: Floor1 doubts...

Hello, I have two questions concerning floor1 encoding/decoding. First I'll ask about the FLOOR1_fromdB_LOOKUP table: what is it's purpose? Is it to convert the amplitude differences between [floor1_Y] values to a dB scale? And, if I'm right with that, here comes the 2nd question: when render_line0 is used to encode floor1, then floor1_inverse2 must be used in decode (in order to

Hello, I was printing some Floor1 X values from a test audio file, and the values that I've obtained look mostly like the following: [23,33,46,65,79,93,111,130,158,186,220,260,312,372,464,556,750,1024] => For long blocks [8,16,33,70,128] => For short blocks Obviously they are not in Hz, so, could someone please tell me what is the unit used? In the specs it's said that the Floor1

Hi, is there an error in the last part of the algorithm describing how to read a floor1 header? According to point 18 and 19, the vector [floor1_class_dimensions] must have at least [floor1_partitions] elements, but when reading/computing these two values on the beginning of the header, they are not related to eachother, and my attempts to apply this algorithm to real ogg-files gives me

Hello, There is a bug in the current version of vorbis/lib/floor1.c. The line that says:- qsort(sortpointer,n,sizeof(int),icomp); should be:- qsort(sortpointer,n,sizeof(int *),icomp); But somebody probably fixed that already. :) Also, I'd like to know how I can encode a file using the channel coupling modes. oggenc doesn't have an option for that yet. Greetings,

Hello, I've been "playing" a little with the floor1 encoding, and my game has posed me a question. I've been modifying (just curiosity) manually, and randomly (not too great modifications), the quantized [floor1_Y] values, just before coding them with the codebooks. As, if I'm not wrong, the [floor1_Y] obtained are then removed to get the residue vectors for each channel, I

Hi, We are two students doing project with Vorbis audio compression for our B.Sc studies. We have two questions: Our first question related to the floor1 inverse dB lookup table. As we understood the floor values encoded as offset integers (Y) from 1 to 256 and then used as index in the floor1_inverse_dB_table to get an encoded value. This value (denoted as X) is inverse of linear frequency so

Hi. Since I'm new to this mailing list, I don't know whether this was discussed in this mailing list, or if it is already fixed. Anyway, the problem is that all audio encoders out there add a small amount of silence to the start/end of the encoded file. This is usually a small amount, around 0.03 seconds. Most of the time it goes unnoticed, BUT when you have tracks that flow into one

Hello, I sent a wav-audio to Asterisk though SIP and ISDN channels and recorded it in wav-audio at the Asterisk server. I found the loudness level of the recorded audio was too high comparing with the orginal audio. How can I ajust it, so that there will be no amplifier used for recording. Thanks a lot. best regards Felix -------------- next part -------------- An HTML attachment was

For those that have experienced low VM recording volumes when using a Digium TDM04b (or similar analog pstn card), a work around has been committed to cvs-head. Need some folks to test it; it doesn't seem to work for me, but need some feedback from others to ensure the work around is actually functioning. (The work around relates back to bug #2023, and was committed around Thursday or Friday

Hi all, How can i make voicemailmain application to not ask user mailbox. it should only ask for password. In the prev versions i used the 'u' option for this purpose but now its gone. So is there still a way to do this? -- Rizwan Hisham Software Engineer AXVOICE Inc. -------------- next part -------------- An HTML attachment was scrubbed... URL:

I've been experimenting with the ideas of Replay Gain[1] and find that ogg123 doesn't have a way of specifying the scaling applied to replayed samples (like -f in mpg123). Looking at libvorbisfile, I see no function exactly matching this possibly desirable behaviour. ov_read() scales by either 128 (byte output) or 32768 (word output), but there's nothing in between. ov_read_float()

Hello All I am looking for a PC based switchboard application. Cisco CallManager has a web attendant console that allows you to use the PC to transfer calls and the like and I was wondering if there was a similar program compatible with *. Thank you in advance Keith D'Atrio -------------- next part -------------- An HTML attachment was scrubbed... URL:

Arc wrote: > However, support for (ie) 48-bit-float should not have to be created, Where are you going to find a 48 bit float? Is there an IEEE standard for that? I know some floating point DSP chips use a 48 bit float internally, but if there is more than one they are unlikely to be compatible and they certainly cannot be read by standard CPUs without having pull each value apart into

Hi, While testing ReplayGain (so it could be related to a bug), I noticed the following gain comments for a file: RG_PEAK=1.71580 RG_RADIO=-7.91 dB RG_AUDIOPHILE=-6.72 dB I've never seen such a large peak. Not that I've looked much, nor have I analyzed the file further. I just thought I should mention it. :) The file is the track Board Burner by Mixmaster Mike, available at:

On Dec 2, 2010, at 07:55, scott brown wrote: > My first thought was that the file had low levels (before he sent > me the file), but that's definitely not the case with this file. > There are many peaks that reach 0dBFS. Live, uncompressed music often has peaks that are 4 dB higher, or more, than a typical commercial CD. Such peaks are brief, and would not really affect the

Hi all, I just came across the following page: http://r3mix.net In the "News" section there is a fairly negative critique of Vorbis; especially it is mentioned that Vorbis "has terrible masking problems". There is also a Vorbis-encoded frequency sweep which shows strong deficiencies at high frequencies, but I suppose this is due to the quite low bitrate of the distributed

I'm considering patching my copy of ogg123 to support vorbisgain tags. Is there any interest in folding this sort of patch into the main line ogg123? Has anyone done this already (or to another command line ogg player)? John --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to

Hello, You know, I always worry about the precision and the float constants... and there is a large lookup table in the floor1.c ... and I figure out a way to keep the code size and speed, but to improve the precision at this lookup table. (the difference is small, but audible) Here is the modifications in the floor1.c: tatic unsigned long FLOOR_fromdB_LOOKUP[256]={

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 There has been a lot of discussion on these two mailing lists about the upcoming EoL of FreeBSD 4.x which I mentioned in my email entitled "HEADS UP: FreeBSD 5.3, 5.4, 6.0 EoLs coming soon". Now that everybody (hopefully) has had their say, I'd like to offer some background and explanation. The concept of "security branches"

Hi everyone, after having an extensive look at the reference decoder as well as the specification documents, I'd like to point out what I think to be some minor omissions/flaws in the latter, and suggestions for correcting them. --- #1: in vorbis-spec-floor1.html, packet decode: Between 14) and 15) a crucial step is missing. Please insert: 14a) [cval] >>= [cbits] ---- #2: in