LibriVox Forum

WinAmp's built-in Nullsoft Signal Processing Studio DSP plug-in has a tempo control. In my installation of Winamp, the Nullsoft Studio has 17 different DSP (i.e., Digital Signal Processing) functions which can be individually loaded. The only one I can see which lets you slow down the recording is ...

I have used, and loved, their freeware Winamp plugin . Though I didn't realise I had such an old version of Winamp on the other computer. Cori, thanks for the pointer to the plugin for Winamp, since that's my prefered player for audio files. I had checked Winamp before my previous post, but didn't ...

The free media player VLC has several types of controls for increasing or decreasing playback speed, like you can do with a DVD player. However, changing the speed of playback also changes the pitch of the voice. Across the width of VLC's small window, there is a progress bar and slider. On either e...

For a brief report on progress in using the compressor in Audacity
to smooth out the volume levels in a recording, see my post in the
thread Problems with Audacity effects
(about volume spikes interfering with normalization).

Here's a follow-up:

For a brief report on progress in using the compressor in Audacity,
see my post in the thread Problems with Audacity effects
(about volume spikes interfering with normalization).

You're welcome, Pattiemarie. Okay, I've done a bit of research on and some more testing with the compressor in Audacity. I learned that it actually does work. In addition, a useful article I read states the compressor is still buggy. I can verify that from my testing. It works pretty good when the v...

pattiemarie, you're not doing anything wrong. It might help to clarify the intent of normalization. As stated in the Glossary , the purpose is to "amplify the signal to within the specified percentage of the maximum level ... to achieve the greatest amount of amplification that will not result in cl...

At the Wikipedia, see Comparison of audio codecs and Codec listening test.

I get my complied binary of LAME from the JT HZ Web site. They are
members of the Audio Engineering Society and have a page titled
Creating quality audio-files using Windows, L.A.M.E., Ogg Vorbis.

I did the test of using a limiter as a faster way to reduce plosives than editing them individually by hand. One problem in assessing the results is that even with manually reducing the amplitude of a plosive doesn't remove its effect, only reduces it. In other words, you can still hear that it's th...

(Must not be obsessive. Must NOT be obsessive!) Jeannie, I listened to most of Chapter 1. For the most part, I didn't hear anything that was objectionable. I like listening to your voice. The exception was during the initial disclaimer, which has some mouth noise. My opinion is you're obsessing. Pr...

I appreciate your help, harvey. Thanks! :) I guess I'll try with the different options and see what works best for me. Regards. Marian M. You're welcome. For your experimenting, Marian, a limiter is a type of compressor, which, in Audacity, is Effects > Compressor ... (there's nothing labeled "limi...

Whether you reduce the amplitude or delete, you'll get better results if you take care in where you put the ends of the selected area. You want to avoid discontinuities in the waveform. The simplest way to do that is to position the ends of the selected region so they are located where the waveform ...

You are welcome, Huskey.

And thank you for the follow-up feedback: I'll be eagerly checking out DVD Flick.

Two low-cost mics I know about. I use a Labtec C-322 headset (non-USB) with good results. The replacement model seems to be the similar-looking "entry-level" model 342 (also not USB): I have a link to this article about a USB mic for the PlayStation 2: Should Logitech's "Karaoke Revolution" Mic Be Y...

Thank you, Ruth. The processed file (32 Kbps to minimize the upload time via dial-up): http://upload.librivox.org/share/uploads/lz/fluctuation_sample_after_limiter.mp3 The limiter used, applied in Cool Edit 2000 , is the one described and illustrated in Audio Processing and Filtering Concepts , whic...