CHAPTER 5

Sonic Holography

Sonic Holography is a unique process which enhances the three- dimensional effects and realism of stereo sound. This is modeled in DSP, from a design based on Bob Carver's legendary (and much sought after) Carver C-9 Sonic Holography Genera- tor.

This circuit was designed to over- come a problem in obtaining accurate sound reproduction:

In a stereo system, both ears will hear the output from both speakers. The left ear hears sound from the left speaker and from the right speaker. To see a problem with this, compare what happens when listening to a live musical performance:

During a concert, each ear will receive one direct sound arrival. For example, a cymbal crashes, both your ears will hear it and the brain tells you accurately the position of the musician. In a stereo recording of the concert, this cymbal crash will be heard from both speakers. The left ear will hear the left speaker, which is fine, but it will also hear the crash from the right speaker. These extra sounds tend to confuse the sense of sound source location.

The stereo effect in a good pair of headphones is enhanced because the left ear only hears the left headphone, and the right ear hears only the right headphone. There are no extra sound arrivals.

To summarize :

1.A real musical event will create only two direct sound arrivals, one at the left ear and one at the right.

2.Stereo playback will give four arrivals , as both speakers are heard by each ear. These second sound arrivals reduce our naturally accurate sense of positioning.

The Holographic Image circuit was designed to cancel out the unwanted second arrivals. The left ear will main- ly hear the left speaker and the right ear mainly hears the right speaker. This is accomplished by sending a complex crosstalk signal from the left and right speakers in addition to the normal program. These extra signals are virtually identical to the unwanted second sound arrivals but they are out-of-phase with them and they can- cel each other out.

The result is a more three-dimen- sional and wider soundstage, where the positioning clues are restored. In a way, the musicians have been freed from the confines of the flat plane be- tween the speakers. You will perceive them as playing forward or playing behind the speakers or to one side or the other, not just somewhere in between. We recommend that you ex- periment with its effect, remember that you are listening for a more accurate sense of the location of the different musicians.

Because the Holographic Image works by phase cancellation of the unwanted second sound arrivals, ac- curate speaker positioning is required. You must make sure that the left speaker is the same distance away from you as the right speaker. Follow the front speaker placement on the next page to get the best results. This is the same as any standard stereo system, only with more care taken to position the left and right speakers accurately.

The Hologram circuit can be engaged using the remote control or from the front panel. There is a short mute period until the circuit is fully engaged or disengaged.

Software CD

The TGP-5 Flash memory software can be upgraded by connecting your PC to the TGP-5's RS-232 serial port, and downloading any avail- able update files from our website: www.sunfire.com. This is the preferred method, as the software can be up- dated fairly quickly. See page 51 for more details.

Alternatively, the TGP-5 software can be upgraded using a CD avail- able from Sunfire Technical Support. This CD will be available periodically if there are major software changes since the initial release.

The following notes show the CD upgrade procedure. The CD or DVD player must be connected to the TGP- 5's digital audio inputs.

1.Turn on your TV, your CD player and the TGP-5.

2.Use the TGP-5 remote to se- lect the On Screen Display.

3.Go to the Settings Menu and then select the Software Menu.

SOFTWARE

UPGRADE SOFTWARE

REVISION LIST

4.Select "Upgrade Software," which brings up a second OSD menu.

5.On the TGP-5, select the digital input which will play the CD. Press ENT on the remote (bottom right).

6.Press 1,2 and 3 on the remote, then play the CD. The TGP-5 display will show the status as the CD data is transferred into the TGP-5.

7.Turn off the TGP-5 when the software transfer is complete.

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User's Manual

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Sunfire TGP-5(E) manual Sonic Holography, Software CD, Software Upgrade Software Revision List
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TGP-5(E), TGP-5 specifications

The Sunfire TGP-5 and TGP-5(E) are high-end audio processors that cater to audiophiles and home theater enthusiasts seeking exceptional sound quality and advanced features. These models are designed with a commitment to delivering pristine audio performance across various formats, making them ideal for both music and movie playback.

One of the standout features of the TGP-5 is its robust digital signal processing capabilities. The device is equipped with a state-of-the-art multichannel DAC that ensures accurate sound reproduction and a high signal-to-noise ratio. This component allows for the processing of high-resolution audio formats, including DSD, ensuring that users can enjoy their music as intended by the artist. The TGP-5(E) version further enhances this experience by offering enhanced room correction technology, which automatically calibrates the system based on the specific acoustics of the listening environment. This feature optimizes audio performance by adjusting frequency response, thereby eliminating unwanted resonances and improving overall sound clarity.

The user interface of the TGP-5 series is designed for ease of use, featuring a straightforward menu system accessible via its front panel display or remote control. Connections are abundant, offering a variety of digital inputs, including HDMI, coaxial, and optical, alongside traditional analog RCA inputs. These options ensure compatibility with almost any home theatre setup and allow integration with modern streaming services and devices.

Another noteworthy characteristic is the TGP-5's support for surround sound formats, including Dolby Atmos and DTS:X. This capability allows users to create an immersive audio experience that enhances movie watching and gaming sessions. Additionally, the TGP-5 incorporates advanced connectivity options, such as Bluetooth and Wi-Fi, enabling wireless streaming from smartphones and tablets.

In terms of build quality, the Sunfire TGP-5 series boasts a sleek and elegant design, typically encased in a sturdy chassis that minimizes vibration and interference. This construction not only enhances durability but also adds a touch of sophistication to any audio setup.

In summary, the Sunfire TGP-5 and TGP-5(E) represent a blend of cutting-edge technology, exceptional audio fidelity, and user-friendly features. With their advanced processing capabilities, comprehensive connectivity options, and support for modern audio formats, these processors are a compelling choice for anyone looking to elevate their audio experience.
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