JP2003162869A5

JP2003162869A5 -

Info

Publication number: JP2003162869A5
Application number: JP2001361440A
Authority: JP
Filing date: 2001-11-27
Publication date: 2005-07-21
Anticipated expiration: 2021-11-27

Claims

In a playback device capable of playing back playback media recorded in various recording forms,
Discriminating means for discriminating whether the recording form of the reproduction medium is a first recording form recorded so as to produce a high reproduction volume or a second recording form recorded so as to produce a low reproduction volume. When,
Volume varying means for increasing the volume when the discriminating means discriminates the second recording form and maintaining the volume when discriminating the first recording form. Playback device.

The volume changing means returns the playback volume to the volume before the volume increase when it is determined by the determining means that the second recording form is switched to the first recording form. The reproducing apparatus according to 1.

An eject detecting means for detecting an eject operation of the reproduction medium;
3. The playback apparatus according to claim 1, wherein when the eject detection unit detects an ejection operation of the playback medium, the volume changing unit returns the playback volume to the volume before the volume increase.

Having a volume adjusting means capable of adjusting the volume;
The volume changing means, when returning the playback volume to the volume before the volume increase, returns the volume to the volume reflecting the adjustment amount adjusted by the volume adjustment means. The playback device according to item.

In a playback device capable of playing back playback media recorded in various recording forms,
Discriminating means for discriminating whether the recording form of the reproduction medium is a first recording form recorded so as to produce a high reproduction volume or a second recording form recorded so as to produce a low reproduction volume. When,
Volume characteristic variable means for enhancing the frequency characteristics of a voice band when determined to be the second recording form by the determining means and maintaining the frequency characteristics when determined to be the first recording form; A playback apparatus comprising:

When it is determined by the determining means that the second recording form has been switched to the first recording form, the volume characteristic varying means returns to the frequency characteristic before the enhancement of the frequency characteristic of the voice band. The playback apparatus according to claim 5.

An eject detecting means for detecting an eject operation of the reproduction medium;
7. The volume characteristic changing unit returns the frequency characteristic to the frequency characteristic before the enhancement of the frequency characteristic of the audio band when the ejection detection of the reproduction medium is detected by the eject detection unit. Playback device.

Having a frequency characteristic adjusting means capable of adjusting the frequency characteristic;
The sound volume characteristic varying means, when returning the reproduction sound volume to the sound volume before the volume increase, returns the sound volume reflecting the adjustment amount adjusted by the frequency characteristic adjusting means. A reproducing apparatus according to claim 1.

The apparatus further comprises volume changing means for increasing the volume when the discriminating means discriminates the second recording form and maintaining the volume when discriminating the first recording form. The playback device according to any one of claims 5 to 8.

The volume characteristic varying means enhances the frequency characteristic of the voice band to such an extent that output distortion does not occur,
10. The playback apparatus according to claim 9, wherein the volume changing unit increases the volume by an amount that is insufficient for enhancing the frequency characteristics of the audio band by the volume characteristic changing unit.

Calculating means for calculating the maximum change width of the frequency characteristic of the voice band;
6. The reproducing apparatus according to claim 5, further comprising pulling-down means for pulling down an equalizer gain or a loudness gain by the maximum change width.

When it is determined by the determining means that the second recording form has been switched to the first recording form, the pull-down means maintains a state in which the equalizer gain or the loudness gain is lowered, and the volume 12. The reproducing apparatus according to claim 11, wherein the characteristic varying means returns the frequency characteristic to the frequency characteristic before the enhancement of the frequency characteristic of the voice band.

The playback apparatus according to any one of claims 1 to 12, wherein the first recording form is linear PCM or MPEG2, and the second recording form is AC-3 or DTS. .