Tag Archives: DSP

foo_dsp_dolbyhp ~ Foobar Virtual 5.1 Headphones

Posted by tom2tec on

Dolby Headphone technology gives you the sound of a 5.1 surround system through any pair of headphones.

It accurately models the surround sound listening experience of a properly set up and calibrated 5.1-channel speaker system, making it ideal for personal and portable surround listening.

This component wraps the functionality of a Dolby Headphone engine DLL (typically DOLBYHPH.DLL bundled with some software DVD players) to be used under Foobar2000. After installation you must configure the plugin pointing out the location of that DLL in your system and restart foobar2000. Amplification is provided by the Dolby Headphone engine itself.

foo_dsp_dolbyhp

Additional resources:
ww.head-fi.org/threads/5-1-headphone-experience-foobar-configuration-for-all-stereo-music-files.447089/

www.head-fi.org/threads/foobar2000-dolby-headphone-config-comment-discuss.555263/

www.dlldownloader.com/dolbyhph-dll/

foo_dsp_subwoofer ~ Foobar2000 Linear Phase Filter

Posted by tom2tec on

Extracts bass from the source signal using a linear phase low-pass filter and sends it to the LFE channel.
Features:

  • fast fir processing
  • adjustable filter shapes
  • delay control
  • mono, stereo, 3.0, 4.0, 5.0 input support

foobar2000.org/components/view/foo_dsp_subwoofer
HA Forum Topic

Linear phase is a property of a filter, where the phase response of the filter is a linear function of frequency. The result is that all frequency components of the input signal are shifted in time (usually delayed) by the same constant amount (the slope of the linear function), which is referred to as the group delay. And consequently, there is no phase distortion due to the time delay of frequencies relative to one another.

~ en.wikipedia.org/wiki/Linear_phase

JAMin ~ JACK Mastering Interface

Posted by tom2tec on

JAMin is the JACK Audio Connection Kit (JACK) Audio Mastering interface. JAMin is an open source application designed to perform professional audio mastering of stereo input streams. It uses LADSPA for digital signal processing (DSP). JAMin is licensed under the GPL.

Features:

  • Linear filters
  • JACK I/O
  • 30 band graphic EQ
  • 1023 band hand drawn EQ with parametric controls
  • Spectrum analyser
  • 3 band peak compressor
  • Lookahead brickwall limiter
  • Multiband stereo processing
  • Presets and scenes
  • Loudness maximizer

jamin

jamin.sourceforge.net

foo_dsp_vlevel ~ Dynamic Normalization

Posted by tom2tec on

VLevel keeps your music from making you jump out of your seat, and it keeps you from having to fiddle with the volume constantly. It’s different from other dynamic compressors because it looks ahead. You can think of VLevel as someone who knows your music by heart, and turns the volume up during quiet passages, but smoothly turns it back down when he knows a loud part is coming. It’s great for making CDs to listen to in your car, or to play background music on your computer.

Vlevel

vlevel.sourceforge.net
HydrogenAudio Topic
HydrogenAudio Wiki

bs2b ~ Bauer Stereophonic-To-Binaural Headphone DSP

Posted by tom2tec on

A typical stereo records are being made to listen by speakers. That is a sound engineer makes the stereo mix to the adaptation of sound for listening of one channel by both ears. Therefore, you will be tired during a long time headphone listening more by a super-stereo effect than by a poor design of headphones. What’s missing in headphones is the sound going from each channel to the opposite ear, arriving a short time later for the extra distance traveled, and with a bit of high frequency roll-off for the shadowing effect of the head. And the time delay to the far ear is somewhat longer at low frequencies than at high frequencies. The Bauer stereophonic-to-binaural DSP (bs2b) is designed to improve headphone listening of stereo audio records…

bs2b.sourceforge.net

freeDSP ~ DIY Audio DSP Project

Posted by tom2tec on

The freeDSP is an open-source digital signal processor family for the do-it-yourself community. The applications range from active loudspeaker concepts (digital crossovers, bass enhancement, …) and room equalization over advanced musical effect processors to car audio signal processing.

freeDSP_1_0_side_small

www.freedsp.cc

Convolver ~ A Convolution Plugin

Posted by tom2tec on

Convolver is an open source, high performance Windows application for applying finite impulse response (FIR) filters to multi-channel digital audio in the form of

Convolver will take a set of FIR filter files (sound files) and convolve them with sound paths mixed from the input channels, mixing the results into a set of specified output channels.

convolver

convolver.sourceforge.net
Download
Documentation