Terminology

Dolby Digital

Dolby Digital is a digital audio compression technology developed by Dolby Laboratories that allows large quantities of audio data to be efficiently recorded on discs. It is compatible with audio signals from mono (1 channel) all the way up to 5.1-channel surround sound. The signals for the different channels are completely independent, and since the sound is high quality digital there is no loss of sound quality.

*The separately sold digital audio processor (PXA-H510/PXA- H900/PXA-H700) is required to enjoy full 5.1-channel surround sound.

The IVA-D901 performs Dolby Digital decoding when it outputs analog audio signals, it just happens to be 2-channel audio not 5.1-channel.

Dolby Pro Logic

Dolby Pro Logic is the technology used to decode programs encoded in Dolby Surround. Pro logic decoding will provide you with four channels of sound (front left/right, center and monaural rear surround) from a 2-channel (stereo) source.

*The separately sold digital audio processor (PXA-H510/PXA- H900) is required to enjoy Dolby Pro Logic surround sound.

Dolby Pro Logic II

Dolby Pro Logic II plays 2-channel sources in 5 channels over the entire frequency range.

This is done with an advance, high sound quality matrix surround decoder which draws out the spatial properties of the original recording without adding any sounds to or changing the sound of the source.

*The separately sold digital audio processor (PXA-H700) is required to enjoy Dolby Pro Logic II surround sound.

Center speaker

Front speakers

Rear speakers

Subwoofer

Speaker layout for enjoying

Dolby Digital sound/dts sound

DTS

This is a home-use digital sound format of the DTS Sound System. This is a high quality sound system, developed by Digital Theater Systems Corp. for use in movie theaters.

DTS has six independent sound tracks. The theater presentation is fully realized in the home and other settings. DTS is the abbreviation for Digital Theater System.

*To enjoy DTS surround sound you need the separately sold DTS digital audio processor (PXA-H900/PXA-H700). The DVD video software must also have a DTS sound track.

The IVA-D901 has a built-in DTS 2-channel audio decoder. Analog audio outputs are available.

Linear PCM audio (LPCM)

LPCM is a signal recording format used for music CDs. Whereas music CDs are recorded at 44.1 kHz/16 bits, DVDs are recorded at 48 kHz/16 bits to 96 kHz/24 bits, thereby achieving higher sound quality than music CDs.

Rating levels (parental lock)

This is a function of the DVD for restricting the viewing age as stipulated by laws in different countries. The way in which viewing is restricted differs from DVD to DVD. Sometimes the DVD cannot be played at all, other times certain scenes are skipped, and other times certain scenes are replaced with other scenes.

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Alpine IVA-D901 Terminology, Dolby Digital, Dolby Pro Logic, Linear PCM audio Lpcm, Rating levels parental lock

IVA-D901 specifications

The Alpine IVA-D901 is a highly regarded in-dash multimedia receiver designed to elevate the in-car entertainment experience. With its sleek design and advanced technology features, it caters to the needs of modern drivers and passengers alike. The unit supports a wide range of media formats, allowing users to enjoy their favorite music and videos on the go.

One of the standout features of the IVA-D901 is its 7-inch motorized touchscreen display. This high-resolution LCD screen offers impressive clarity and color, making it easy to navigate through menus and control media playback. The touchscreen is highly responsive, providing an intuitive interface that enhances user experience. Additionally, the motorized function allows the screen to elegantly retract when not in use, contributing to its aesthetic appeal.

The IVA-D901 stands out with its extensive connectivity options. It supports both Bluetooth and USB connections, facilitating hands-free phone calls and wireless audio streaming. This makes it incredibly convenient for users who wish to maintain focus on the road while still enjoying their favorite tracks. Moreover, the unit is compatible with various external devices, enabling seamless integration with smartphones and tablets.

Another notable characteristic of the IVA-D901 is its versatility in media playback. It is designed to play DVDs, CDs, and a variety of video files, including MP4 and DIVX. The built-in DVD player enhances the multimedia experience, allowing passengers to enjoy movies during road trips. Additionally, the receiver also supports AM/FM radio, providing traditional entertainment options.

Users also benefit from the advanced tuning capabilities of the IVA-D901. Its built-in DSP (Digital Signal Processing) allows for customizable sound settings, ensuring that audio can be tailored to individual preferences. This feature creates a more immersive listening experience, as adjustments can be made based on the acoustics of the vehicle.

In terms of expansion, the Alpine IVA-D901 is equipped with multiple preamp outputs, allowing for the easy addition of amplifiers or subwoofers. This flexibility enables users to enhance their sound system to achieve the desired audio performance.

To sum up, the Alpine IVA-D901 is a powerful multimedia receiver that combines stunning visuals, extensive connectivity, and high-quality audio capabilities. It’s a perfect choice for those who seek luxury and functionality in their in-car entertainment setup.