Displaying 20 results from an estimated 4000 matches similar to: "low pass filter frequency adjustable"
2002 Mar 11
2
frequency cutoff?
Back in the day, when I was still using LAME, I was aware of the fact that
the program would cut off frequencies above a certain level (lowpass). With
192 kbps this was usually around 20Khz (which is the highest frequency a human
can hear, as far as I know), and at 128 something like 16Khz.
Does Vorbis do something similar? If so, does someone have a chart of the
cutoffs at the different quality
2002 Jul 12
1
oggenc lowpass switch?
Will oggenc have a lowpass switch? I would prefer to lowpass at
15-16khz at -q3 for use with FM broadcasting. The additional
frequencies would be chopped off anyway by the transmiters hardware
lowpass filter so the encoder could use the addition bits for other
purposes.
It could be enforced that the lowpass can only be reduced and not
increased from the default. This would stop people
2005 Apr 05
5
Standard encoding rates?
Is there a list somewhere of "standard" encoding rates? I know, for example,
CDs are encoded at 44100, as is a lot of digital sound, but I've seen
programs that specify different levels of quality (like radio, phone, tape,
CD) and I'd like to know if there are some encoding rates that are accepted
as standardized for recording at different levels of quality.
If so, is there
2018 Nov 02
6
Antw: Re: Possible bug in Opus 1.3 (opus-tools-0.2-opus-1.3)?
Hi!
Excuse the delay, but I had to deal with a corrupted NTFS file system that ate many important files on an USB stick...
The FLAC version of the original is almost 6MB and it can be downloaded slowly from this time-limited link:
https://sbr5vjid0jgmce4q.myfritz.net:40262/nas/filelink.lua?id=0ba5a10529a6fe7b
On the meaning of a logarithmic sweep: If you use foobar2000 and the
2018 Oct 25
2
Possible bug in Opus 1.3 (opus-tools-0.2-opus-1.3)?
Hi!
Playing with Opus 1.3 I converted a tone sweep with a sample rate of 96kHz (just for fun). Before I had converted that from WAV to FLAC, and to Vorbis without problems.
With Opus I noticed that the file size for 48kHz and 48 kbps compared to 96kHz Vorbis at 31kbps is about double the size and it sounds even worse (than Vorbis) (there is a lot of noise in the lower frequencies when a low
2002 Feb 12
1
rc3 and lowpass filters
Hello,
I was wondering about the lowpass filter applied at the different
quality levels. It seems that the 16kHz cut-off is still there at
quality 3. I didn't really abx it, so maybe my mind plays tricks on
me. :)
Please can someone enlighten me what is used for -q0, -q1 and so on.
(lame tells me whats used when encoding tracks)
I know I shouldn't judge by bandwidth but I would like to
2004 Aug 06
1
Recommendations for Pre-/Post-Processing
Hi,
I just wanted to know if there are any recommendations for
pre-/post-processing (processing power isn't a question).
I'm aiming at 16kHz and tried an lowpass-filter at 11kHz before encoding but
this didn't improve the results...
<p>Regards,
Thomas
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2014 Aug 10
1
High Frequency Hiss with Opus at 48 kbit/s
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Hi to everybody.
First of all I hope this is the right place to discuss such an
(nitpicky) issue.
I've just been testing the current Opus release and for mere curiosity
compared its performance to WMAPro with CD quality music at low
bitrates (48 kbit/s).
While Opus generally does a very good job, I found one particular
example (a high pitched
2004 Aug 06
1
Low frequency feedback?
Devin Campbell wrote:
> >> http://www.starbeamllc.com/images/feedback.mp3
> I guess my next question is: is there something special about my stream
> or my songs that's causing this? I'll have to do some experimentation.
Owtch, my ears. :( I find that 16 kHz beep most irritating, it hurts
even at low volumes. ;P
Anyways, the humming you hear is actually multiple tones,
2002 Feb 13
2
Comparison between Ogg Vorbis and LAME
Guys (and girls),
I\'ve been testing Ogg Vorbis quality at home, and I thought I\'d share the
results with you. For those who want the conclusion, Vorbis 1.0 RC3 sounds
better than LAME 3.70 vbr/cbr (which I\'m told now that it\'s broken for VBR), at
less bitrate, however, it\'s not perfect (and probably never will, since it\'s a
lossy audio codec) and could use some
2000 Nov 14
1
Lowpass filter option required
I mentioned many months back that I intend to switch to Ogg/Vorbis from
MP3/LAME once the final version is out but I need to have an adjustable
lowpass filter option similar to LAME's. If this isn't done yet, could you
please add it to your list for OggEnc. Specifically I need to cut all
frequencies above 17khz.
Thanks,
Ross.
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2001 Aug 15
10
RC2 worse than RC1 and Beta4
After doing an informal (128k) listening test, I have concluded that I
prefer Beta4 over RC2.
The 16kHz low-pass on the RC2 encoder makes it sound like FM radio. Both
encoders SEEM to have a couple of dB bump at 10kHz.
JT
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2004 Apr 02
2
resampling to 48 kHz
One thing that has always bothered me about the ogg
format is the distortion of high frequency sounds -
even at data rates as high 128 and 160 kbps. I find
the best way around this is to resample the wav file
to 48 kHz (using SoundForge 6.0) before encoding
(using CDex) to ogg. It takes a while, and adds a lot
of extra wear and tear on my drive, but what a
difference! The result is an 80k ogg file
2011 Mar 24
5
Sox and bad quality when converting to 8 kHz
Hi list,
I have an 44100 Hz file with human voice, stereo with 16Bit.
When convertig this to 8 kHz, mono I loose a lot of quality and have
some ground noise. I tried several sox options but without success.
Can somebody help....
best regards Thomas
2011 Sep 21
3
RESEND: Mixmonitor command parameter problem on Asterisk 1.8.4
Is anyone can help me with this ? I'm really desperate.
Thx in ad.
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Ikka - Mitra
Kreasindo
Sent: Wednesday, September 14, 2011 5:02 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: [asterisk-users] Mixmonitor command parameter problem on
2012 Nov 26
1
Plotting an adjusted kaplan-meier curve
Dear R-users
I am trying to make an adjusted Kaplan-Meier curve (using the Survival package) but I am having difficulty with
plotting it so that the plot only shows the curves for the adjusted results.
My data come from a randomised controlled trial, and I would like the adjusted Kaplan-Meier
curve to only show two curves for the adjusted survival: one for those on treatment (Treatment==1)
2001 Sep 03
2
lowpass option (Was: RE: channel coupling in rc2)
I would very much like a lowpass option because for FM radio broadcasting I
don't want to encode frequencies above 15khz. I'm waiting for this option
before switching to ogg from mp3(lame).
Ross.
> -----Original Message-----
> From: owner-vorbis@xiph.org [mailto:owner-vorbis@xiph.org]On Behalf Of
> Gian-Carlo Pascutto
> Sent: Tuesday, 4 September 2001 01:46
> To:
2008 Sep 30
1
fft inverse display help
I have a a simple function that generates a time series square wave:
genseq <- function()
{
x <- numeric(4*365)
s <- seq(as.Date("2005-01-01"), as.Date("2008-12-31"), by="month")
ob <- as.vector(s[c(10,22,34,46)] - as.Date("2005-01-01"))
oe <- as.vector(s[c(11,23,35,47)] - as.Date("2005-01-01"))
for(.index in 1:length(ob))
2001 Sep 18
1
RC2 encoder status
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Hi,
I've been off this list for a while now so I lost touch with ogg vorbis
development. Could somebody please bring me up to date?
As I take, the current RC2 release contains full 1.0 feature support (incl.
channel coupling). Does this mean I can now start encoding all of my music as
a ~128kbit/s ogg bitstream without fear of reduced
2009 May 11
1
22 kHz version of CELT
Hi,
I'd like to know the reasons why CELT supports only signals with sampling
frequency in the range of 32-96 kHz.
In effect, it can clearly outperform speex at high bitrates, and has
potential to be used in high quality voice communications even for 11, 16
and 22 kHz speech signals. It could also compete with SILK codec (to be soon
released by Skype).
See this page for more specifications