GLOSSARY

Sound field programs

■CINEMA DSP

Since the Dolby Surround and DTS systems were originally designed for use in movie theaters, their effect is best felt in a theater having many speakers and designed for acoustic effects. Since home conditions, such as room size, wall material, number of speakers, and so on, can differ so widely, it’s inevitable that there are differences in the sound heard as well. Based on a wealth of actually measured data, YAMAHA CINEMA DSP uses YAMAHA original sound field technology to combine Dolby Pro Logic, Dolby Digital and DTS systems to provide the visual and audio experience of movie theater in the listening room of your own home.

■SILENT CINEMA

YAMAHA has developed a natural, realistic sound effect DSP algorithm for headphones.

Parameters for headphones have been set for each sound field so that accurate representations of all the sound field programs can be enjoyed on headphones.

■Virtual CINEMA DSP

YAMAHA has developed a Virtual CINEMA DSP algorithm that allows you to enjoy DSP sound field surround effects even without any surround speakers by using virtual surround speakers.

It is even possible to enjoy Virtual CINEMA DSP using a minimal two-speaker system that does not include a center speaker.

Audio information

■ITU-R

ITU-R is the radio communication sector of the ITU (International Telecommunication Union). ITU-R recommends a standard speaker placement which is used in many critical listening rooms, especially for mastering purposes.

■LFE 0.1 channel

This channel is for the reproduction of low bass signals. The frequency range for this channel is 20 Hz to 120 Hz. This channel is counted as 0.1 because it only enforces a low frequency range compared to the full-range reproduced by the other 5/6 channels in Dolby Digital or DTS 5.1/6.1-channel systems.

■PCM (Linear PCM)

Linear PCM is a signal format under which an analog audio signal is digitized, recorded and transmitted without using any compression. This is used as a method of recording CDs and DVD audio. The PCM system uses a technique for sampling the size of the analog signal per very small unit of time. Standing for “pulse code modulation”, the analog signal is encoded as pulses and then modulated for recording.

■Sampling frequency and number of

quantized bits

When digitizing an analog audio signal, the number of times the signal is sampled per second is called the sampling frequency, while the degree of fineness when converting the sound level into a numeric value is called the number of quantized bits.

The range of rates that can be played back is determined based on the sampling rate, while the dynamic range representing the sound level difference is determined by the number of quantized bits. In principle, the higher the sampling frequency, the wider the range of frequencies that can be played back, and the higher the number of quantized bits, the more finely the sound level can be reproduced.

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Yamaha DSP-AX750SE owner manual Sound field programs, Audio information, LFE 0.1 channel, PCM Linear PCM
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DSP-AX750SE specifications

The Yamaha DSP-AX750SE is a high-performance audio receiver designed to deliver an immersive home theater experience. Launched as part of Yamaha's renowned lineup of surround sound receivers, the DSP-AX750SE combines advanced technology with user-friendly features, making it a popular choice for both audio enthusiasts and casual listeners.

One of the standout features of the DSP-AX750SE is its impressive audio processing capabilities. Equipped with a powerful DSP (Digital Signal Processor), the receiver supports a variety of surround formats, including Dolby Digital and DTS. This allows users to enjoy a multi-dimensional sound experience, whether they're watching movies or listening to music. The unit can handle up to 7.1 channels, delivering rich and immersive audio that fills any room.

The DSP-AX750SE boasts Yamaha's unique Cinema DSP technology, which simulates the acoustics of various listening environments. With multiple preset sound fields, users can select different modes to enhance their audio experience based on the type of content they’re enjoying, whether it’s a concert, movie, or sports event. This feature stands out in creating a cinematic atmosphere, allowing listeners to feel as if they are part of the action.

Another significant characteristic of the DSP-AX750SE is its versatility in terms of connectivity. The receiver is equipped with multiple inputs and outputs, including HDMI ports, allowing for a seamless connection to modern devices such as Blu-ray players, gaming consoles, and streaming devices. The inclusion of both digital coaxial and optical inputs further enhances its compatibility with various audio sources.

For those who appreciate high-resolution audio, the DSP-AX750SE also supports PCM signals for high-definition sound formats. It comes with a built-in AM/FM tuner, enabling users to enjoy their favorite radio stations. The unit also features a robust power amplifier section, ensuring clean and dynamic audio reproduction even at higher volume levels.

User-friendliness is another key design element of the Yamaha DSP-AX750SE, with an intuitive on-screen menu system that simplifies navigation and setup. The remote control is designed to provide easy access to various functions, allowing users to tweak settings on-the-fly without hassle.

In conclusion, the Yamaha DSP-AX750SE is a feature-rich audio receiver that excels in enhancing the home theater experience. With its advanced processing technologies, versatility in connectivity, and user-friendly design, it is well-suited for anyone looking to create an exceptional audio environment. Whether for movie nights or music playback, the DSP-AX750SE remains a reliable choice for high-performance sound.
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