Business Domain:

Sound Design

[FHSp] - Freefield & Headphone Spatialization

The human auditory system can localize several sound sources very intuitively. Even when they occur at the same time.
Curently the mainstream music listening habbits are likewise streaming stereo from the  internet and listening via a mono Boombox or direkt from the mobile-phone.
But the trasformation to HIFI-Suround devices end consumer already took place.
Seen from a technical point of view, the transformation of the device-technology is on the end-consumer market.

• The transformation from STEREO to SURROUND audio already happend.
• But we have a reallly HUGE GAP of good Surround Audio content 

With the future of gold-standard of multimedia, music-production and telecommunication.

What is Freefield & Headphone Extension about?

The technlogy of [FHSp]® is a toolchain for creating audio material that allows to arrange the receipted listening location in the horizontal plane.
It produces audio-output for

1. for binaural-headphones
2. to all of the different surround-audio setups (Phones, Surround 4.0, Surroud 5.1/7.1x/11.x)
3. These can be played using standard HIFI-Audio devices.

Effects are availabe

• Linear Motion (Dopplereffect) and 
• Cyclic Motion ( Rotation in the horizontal plane)

Description

Generation of Audio Surround -Content

The [FHSp]® is a Spatial-Surround toolchain that allows "Generating of Surround Audio Content"

• the preparation of a several time-synchronous audio-channels
• with the goal to produce a spatial listening-impression with selectable listening localisations.

[FHSp]® It is able 

• to "arrange" the listening position in the horizontal plane and 
• allows linear motions and rotation around the head

[FHSp]® can produce spatial audio-content for the "Audio-Configurations" :

• binaural headphones and
  
• Surround Audio Speakers (4.0, 5.1, 7.x, ... .
  
• output for Stereo-Speakers is is possible. too.
  

Both fixed source positions and circularmotion of the audio-sources around the head are possible.
Linear-motion of the audio sources relative to the listener (for drive-byes with e.g doppler-effects) can also be provided.
As STEREO audio content, allows only panning, betweeen the speakers left/right.  So the full horizontal plain cannot be konquered.

[FHSp]®  Audio Content for Headphones whih allow to position each single audio channel at any position around the head in the horizontal plane. 

The postions front/front-left is also possible as rear/rear-right.
As it is based on muli-track audio master-material, the maniputalation of the spatial-configuration happens after the recording e.g. in post-production
This makes the differece to other spatial audio techniques like dummy-head-microphone recording.

Use-Cases:

Production of  spatial audio ("Suround") content

• suitable for binaural headphones 

• and via Surround speaker systems (4.0)
• and via regular Home-Entertainment Systems (speaker configuration 5.x/7.1)
• and via Cinema Surround speaker systems (11.x)
• other speaker configurations culd be adapted
  

 Properties of [FHSp]®

• [FHSp]® is capable of producing live Audio-Output using regular PC-Hardware.
• Independence of foreign Companies and foreign Patents.
  
• No license fees are necessary .
• The Playback of the created content requires NO SPECIAL Hardware.
  HIFI-Surround devices in the State of the ART  are suitable to enjoy [FHSp] Suround-Audio
• It runs both on Windows and Linux.
• This technology is in the meanhile state of the arts technology.
• The Source Code of the Source Technology is available
  
• and can be exetended
  
  

Demo material can be provided on request.

[FHSp]/Sp²  - Spectral-Spatial MIX

[FHSp]/Spectral-Spatial Mix 

Is a fresh and innovative way to create surround audio content.
The method "Spectral-Spatial MIX.” extracts musical information from a source (e.g. the played note), and takes this information to add spatial information to the source itself and mixes a spatial signal to a final output audio signal.