GLOSSARY

Audio formats

Dolby Digital

Dolby Digital is a digital surround sound system that gives you completely independent multi-channel audio. With 3 front channels (left, center, and right), and 2 surround stereo channels, Dolby Digital provides 5 full-range audio channels. With an additional channel especially for bass effects, called LFE (low frequency effect), the system has a total of 5.1-channels (LFE is counted as 0.1 channel). By using 2-channel stereo for the surround speakers, more accurate moving sound effects and surround sound environment are possible than with Dolby Surround. The wide dynamic range (from maximum to minimum volume) reproduced by the 5 full-range channels and the precise sound orientation generated using digital sound processing provide listeners with previously unheard of excitement and realism.

With this unit, any sound environment from monaural up to a 5.1-channel configuration can be freely selected for your enjoyment.

Dolby Digital EX

Dolby Digital EX creates 6 full-bandwidth output channels from 5.1-channel sources. This is done using a matrix decoder that derives 3 surround channels from the 2 in the original recording. For the best results, Dolby Digital EX should be used with movie sound tracks recorded with Dolby Digital Surround EX. With this additional channel, you can experience more dynamic and realistic moving sound especially with scenes with “flyover” and “fly-around” effects.

Dolby Pro Logic II

Dolby Pro Logic II is an improved technique used to decode vast numbers of existing Dolby Surround software. This new technology enables a discrete 5-channel playback with 2 front left and right channels, 1 center channel, and 2 surround left and right channels (instead of only 1 surround channel for conventional Pro Logic technology). Music and Game modes are also available for 2-channel sources in addition to the Movie mode.

Dolby Pro Logic IIx

Dolby Pro Logic IIx is a new technology enabling discrete multi-channel playback from 2-channel or multi-channel sources. There is a Music mode for music, a Movie mode for movies and a Game mode for games.

Dolby Surround

Dolby Surround uses a 4 channel analog recording system to reproduce realistic and dynamic sound effects: 2 front left and right channels (stereo), a center channel for dialog (monaural), and a surround channel for special sound effects (monaural). The surround channel reproduces sound within a narrow frequency range.

Dolby Surround is widely used with nearly all video tapes and laser discs, and in many TV and cable broadcasts as well. The Dolby Pro Logic decoder built into this unit employs a digital signal processing system that automatically stabilizes the volume on each channel to enhance moving sound effects and directionality.

DTS 96/24

DTS 96/24 offers an unprecedented level of audio quality for multi-channel sound on DVD-Video, and is fully backward-compatible with all DTS decoders. “96” refers to a 96 kHz sampling rate (compared to the typical 48 kHz sampling rate). “24” refers to 24-bit word length. DTS 96/ 24 offers sound quality transparent to the original 96/24 master, and 96/24 5.1-channel sound with full-quality full- motion video for music programs and motion picture soundtracks on DVD-video.

DTS (Digital Theater Systems)

Digital Surround

DTS digital surround was developed to replace the analog soundtracks of movies with a 6-channel digital sound track, and is now rapidly gaining popularity in movie theaters around the world. Digital Theater Systems Inc. has developed a home theater system so that you can enjoy the depth of sound and natural spatial representation of DTS digital surround in your home. This system produces practically distortion-free 6-channel sound (technically, a left, right and center channels, 2 surround channels, plus an LFE 0.1 channel as a subwoofer, for a total of 5.1- channels). The unit incorporates DTS-ES decoder that enables 6.1-channel reproduction by adding the surround back channel to existing 5.1-channel format.

Neo:6

Neo:6 decodes the conventional 2-channel sources for 6 channel playback by the specific decoder. It enables playback with the full-range channels with higher separation just like digital discrete signal playback. Two modes are available; “Music mode” for playing music sources and “Cinema mode” for movies.

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Yamaha RX-V657 owner manual Glossary, Audio formats

RX-V657 specifications

The Yamaha RX-V657 is a versatile and robust AV receiver, designed to cater to both audiophiles and casual listeners alike. Released in the mid-2000s, this model quickly became popular due to its impressive feature set and solid performance, making it an excellent choice for home theater enthusiasts.

One of the standout features of the RX-V657 is its ability to deliver 6.1 channel surround sound. This receiver supports various audio formats, including Dolby Digital EX and DTS-ES, allowing it to immerse listeners in multi-dimensional soundscapes. Users can enjoy their favorite movies, music, and games with enhanced depth and clarity, ensuring an engaging audio experience.

The RX-V657 is equipped with Yamaha's proprietary YPAO (Yamaha Parametric room Acoustic Optimizer) technology. This feature automatically measures the acoustics of your room and adjusts the speaker settings accordingly, optimizing the sound output based on the specific environment. This ensures that you achieve the best possible sound quality, regardless of your room's shape or furnishings.

Another notable aspect of the RX-V657 is its connectivity options. The receiver comes with multiple HDMI inputs, allowing for easy integration with modern devices such as Blu-ray players, gaming consoles, and streaming devices. It also features legacy connections like component and composite video inputs, making it compatible with older equipment as well. Additionally, the inclusion of an FM/AM tuner ensures that users can enjoy traditional radio broadcasts.

The RX-V657 includes a variety of audio processing features, such as Yamaha's cinema DSP. This technology recreates the acoustic characteristics of famous concert halls and cinema environments, enhancing the listening experience for music and movie fans alike. The receiver supports multiple sound fields, giving users the flexibility to choose the optimal setting for their content.

In terms of power, the RX-V657 delivers a solid performance with 100 watts per channel. This wattage ensures that it can drive a wide range of speakers, providing sufficient power for both small and larger home theater setups. The RX-V657 also incorporates a high dynamic power capability, which improves performance during demanding audio passages.

The design of the RX-V657 reflects Yamaha’s commitment to quality, featuring a sleek, modern aesthetic with a user-friendly front panel. The intuitive layout of controls, along with a well-organized display, enhances the overall user experience, making it easy to navigate through various settings and features.

In conclusion, the Yamaha RX-V657 is a feature-rich AV receiver that combines advanced audio technologies with practical connectivity options. It caters to the needs of both casual listeners and dedicated audio enthusiasts, making it a valuable addition to any home theater system. Its blend of performance, versatility, and ease of use positions it as a highly regarded model in Yamaha's lineup.