JP2962344B2 - TV receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television (TV) receiver, and more particularly to a television receiver capable of processing audio signals.

[0002]

2. Description of the Related Art Generally, as a TV receiver, for example,
"Color Television" (Japan Broadcasting Corporation, 1974)
(February 25th, the 11th printing issue) is known. Such a TV receiver has the configuration shown in FIG. The TV receiver shown in FIG. 2 includes a tuner 1, a video circuit 2, a synchronization circuit 3, a CRT 4, an audio circuit 5,
And a speaker 6.
When the V channel is selected, a video signal among the received TV signals is supplied to the video circuit 2 and a synchronization signal is supplied to the synchronization circuit 3. Further, the audio circuit 5 is supplied with an audio signal. Then, an image is displayed on the CRT 4 by the image circuit 2 and the synchronization circuit 3. On the other hand, a sound is output from the speaker 6 by the sound circuit 5.

[0003]

In a conventional TV receiver, video and audio are simply reproduced from a TV signal transmitted from a broadcasting station. No operations can be performed. That is, the conventional TV receiver has a problem that the audio signal cannot be operated on the receiving side.

An object of the present invention is to provide a TV receiver capable of processing and operating audio signals.

[0005]

According to the present invention, there is provided a video means for projecting an image on a screen based on a video signal in a received television signal, and a result of an audio formant analysis for the audio signal in the received television signal. A television receiver is provided, comprising: audio processing means for performing audio processing based on the audio processing signal to generate an audio processing signal; and audio generation means for transmitting audio in accordance with the audio processing signal. The voice processing means may include, for example, a memory in which various types of sound sources are stored, a voice processing unit that performs voice processing on the voice signal, and determining the identity of a predetermined speaker's voice and the voice signal. Instructing means for instructing the speech processing unit to execute speech processing when a match is determined using formant analysis,
The audio processing unit performs audio processing on the audio signal using various types of sound sources stored in the memory, and outputs the processed audio signal as the audio processing signal.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

Referring to FIG. 1, desired tuner 1 is
When the V channel is selected, a TV signal is received as a reception TV signal. Then, a signal including a video signal and a synchronization signal (hereinafter referred to as a video synchronization signal) is supplied to a delay circuit 7, and an audio signal is supplied to an A / D conversion circuit 8. The delay circuit 7 delays the video synchronization signal for a preset delay time and outputs the delayed video synchronization signal. Among the delayed video synchronization signals, the delayed video signal is supplied to the video circuit 2, and the delayed synchronization signal is supplied to the synchronization circuit 3. And
An image is displayed on the CRT 4 by the image circuit 2 and the synchronization circuit 3.

On the other hand, the A / D conversion circuit 8 A / D converts the audio signal and outputs it as a digital audio signal. Then, this digital audio signal is subjected to audio processing by an audio processing circuit 9 as described later, and is output as a digital audio processing signal. At this time, the audio processing circuit 9
The voice processing is executed with reference to the stored data stored in advance in the storage device. The audio processing circuit 9 and the memory 12 are controlled by the control circuit 11.

The digital audio processing signal is D / A converted by the D / A conversion circuit 10 and output as an analog audio processing signal. This analog audio processing signal is applied to the audio circuit 5, and the audio circuit 5 outputs a sound from the speaker 6.

Here, audio processing in the audio processing circuit 9 will be described.

The voice processing circuit 9 includes a voice synthesis circuit 9a, a formant comparison circuit 9b, formant processing circuits 9c and 9
d, Fourier transform circuits 9e and 9f, and switch 9g
It has.

The memory 12 stores various types of sound sources as storage data (for example, the storage data is stored in a sound source area of the memory 12).
2 stores a specific (specific speaker) voice signal (digital voice signal). When a specific audio signal is stored, the switch 9g is controlled by a command from the control circuit 11.
Is turned on, and the memory 1 specified by the control circuit 11 is turned on.
A specific audio signal is stored in the second area (specific area) as a storage specific audio signal. When performing voice comparison (ie, when performing voice processing), the stored specific voice signal is read from the memory 12 by a read command from the control circuit 11. The stored specific voice signal is converted to a Fourier transform circuit 9f.
Is subjected to Fourier transform processing, and then formant processing circuit 9d
(The analysis result obtained as a result of this formant analysis is hereinafter referred to as a specific formant distribution).

On the other hand, a digital audio signal is supplied from the A / D conversion circuit 8 to the Fourier transform circuit 9e. (Hereinafter, an analysis result obtained as a result of the formant analysis is referred to as a general formant distribution).

The specific formant distribution and the general formant distribution are given to a formant comparing circuit 9b, and the formant comparing circuit 9b compares the specific formant distribution with the general formant distribution and confirms that the formant distribution is the same formant. In general, the formant distribution of the voice signal has a clear individual difference, which is an effective method for determining a specific speaker.) A match signal is sent to the control circuit 11 and the voice synthesis circuit 9a. The control circuit 11 responds to the coincidence signal.
Then, the memory 12 is accessed to provide various kinds of sound sources stored in the memory 12, that is, stored data to the speech synthesis circuit 9a. On the other hand, when the voice synthesizing circuit 9a receives the coincidence signal, it synthesizes the stored data and the digital voice signal, that is, processes the digital voice signal with the stored data and outputs it as a digital voice processing signal (the coincidence signal is output). Otherwise, the speech synthesis circuit 9a does not execute the speech synthesis processing).

When performing the above-described audio processing, for example, a command to perform the audio processing is given from the viewer to the control circuit. In this way, the voice of a specific speaker is processed, but the voice signal can be sent to the video signal for the time required for the voice processing. Therefore, the video signal is delayed by the delay circuit 7. . That is, the above-mentioned preset delay time = time required for audio processing.

[0016]

As described above, according to the present invention, the voice of a specific speaker is processed by the viewer as necessary (that is,
Editing), for example, in a Japanese dubbed broadcast such as a Western movie, it is possible to process the audio of a specific speaker and edit the audio to match the original image of the specific speaker. This has the effect of making the viewing more enjoyable and attractive.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a TV receiver according to the present invention.

FIG. 2 is a block diagram showing a conventional TV receiver.

FIG. 3 is a diagram for explaining an operation of the audio processing circuit shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuner 2 Video circuit 3 Synchronization circuit 4 CRT 5 Audio circuit 6 Speaker 7 Delay circuit 8 A / D conversion circuit 9 Audio processing circuit 10 D / A conversion circuit 11 Control circuit 12 Memory

Claims (2)

(57) [Claims] 1. A video means for displaying an image on a screen based on a video signal in a received television signal, and performing audio processing on the audio signal in the received television signal based on a result of audio formant analysis. A television receiver comprising: a sound processing unit that generates a signal; and a sound generation unit that transmits a sound in accordance with the sound processing signal. 2. The television receiver according to claim 1, wherein the audio processing unit includes a memory in which various types of sound sources are stored, an audio processing unit that performs audio processing on the audio signal, and a predetermined audio processing unit. Instruction means for instructing the speech processing unit to execute speech processing when the identity of the speech of the speaker and the speech signal is determined using formant analysis and the speech signals match. The television receiver, wherein the unit performs audio processing on the audio signal using various types of sound sources stored in the memory and outputs the processed audio signal as the audio processing signal.