JPH02202125A - Receiver for voice multiplex broadcasting - Google Patents

Abstract

PURPOSE:To dispense with a complicated operation to search desired language at a reception side even when voice language is changed at random at a broadcasting side by setting the voice signal of language set from the reception demodulated voice signal of voice multiplex broadcasting preferentially as voice output. CONSTITUTION:The acoustic feature parameters of male voice and female voice in plural kinds of language are registered on mother tongue identification devices 8 and 9 in a table format in advance, and an acoustic parameter for identifying motor language is extracted at every 10-100msec from an input voice signal waveform by the devices, and it is identified to which language an input voice signal is equivalent. An output voice selection circuit 10 fetches a language specification signal identified by the mother tongue identification devices 8 and 9, and change-over switches 1 and 2 are switched and set so that the voice signal of the language set at a mother tongue setting unit 11 can be introduced to voice amplifiers 3 and 4 side. In such a manner, a receiver can listen to broadcasting in the language desired by the receiver when broadcasting language is changed at random.

Description

[Detailed description of the invention] A. Industrial application field The present invention relates to an audio multiplex broadcast receiving device.

B0 Summary of the Invention The present invention identifies the language of the received and demodulated audio signal when transmitting and receiving the audio signals of the main channel and the sub-channel, and outputs the audio with priority given to the language that matches the set language. , the language is changed randomly to facilitate listening in the desired language.

C1 Conventional technology In audio multiplex broadcasting, audio different from the main channel audio is modulated with a subcarrier and transmitted along with the main channel, and the receiving side separates and extracts the main channel audio and the secondary channel audio, and then creates a stereo broadcast. I am at 12 so that I can listen to the audio of bilingual broadcasts.

Conventionally, a receiving apparatus for audio multiplex broadcasting is capable of selecting a receiving channel, as shown in FIG. The separated and demodulated audio channels A and B are switched and inputted to either one of the audio amplifiers 3.4 by a changeover switch 1.2,
The amplified outputs of both amplifiers 3.4 drive left and right speakers 5.6. The changeover switch 1.2 is switched in four ways by the changeover setting device 7, and as shown in the figure, channel A is output to the left speaker 5, and channel B is output to the right speaker 6.

D8 Problems to be Solved by the Invention In conventional audio reception, it is possible to switch between two channels of audio, but this switching is determined by the setting of the changeover switch. By the way, like recent satellite broadcasting, the main channel (Ach) broadcasts news in the native language,
For other broadcast programs, depending on the content being broadcast, the main channel may play a foreign language or the native language. In this way, when multiple languages are played randomly on the same audio channel, the recipient can choose which channel they want to listen to,
It becomes necessary to frequently operate the switching setting device 7 to match the language.

SUMMARY OF THE INVENTION An object of the present invention is to provide a receiving device that facilitates listening in a language desired by a receiver when the broadcast language is changed randomly.

81 Means and Effects for Solving the Problems In order to achieve the above object, the present invention provides a receiver for audio multiplex broadcasting that transmits and receives audio signals in a main channel and a sub-channel, respectively. A native language identification device that identifies the language type from the acoustic parameters of each audio signal; and a native language identification device that preferentially captures and outputs audio signals that match the language type signal of the native language identification device and a preset language. and output audio selection means to identify the language type of the received and demodulated audio signal, and perform automatic switching to give priority to the audio output of the language that matches the set language.

F. Embodiment FIG. 1 is a block diagram showing an embodiment of the present invention, and parts equivalent to those in FIG. 2 are designated by the same reference numerals.

In FIG. 1, the audio signal of the main channel (Ach) is not only guided to the changeover switch 1.2 but also taken into the native language identification device 8. Similarly, the audio signal of the subchannel (Bch) is not only guided to the changeover switch 1.degree.2, but also taken into the native language identification device 9.

These native language identification devices 8.9 have the acoustic feature parameters of masculine sounds and feminine sounds registered in advance in a table format for multiple languages (for example, Japanese, English, Chinese, French, etc.), and input speech Acoustic parameters for native language identification are extracted from the signal waveform every 10 to 100 msec,
Identify which language the input audio signal will be in.

The output voice selection circuit 10 takes in the language type signal identified by the native language identification device 8゜9, and sets the native language setting Z+111.
The selector switch 1.2 is set so as to guide the audio signal of the language to be set to the audio amplifier 3.4.

In this configuration, when an audio broadcast in the second native language is received on the main channel and an audio broadcast in the first native language is received on the sub channel, the first native language is set in the native language setting device 11. If so, the output audio selection circuit 10 selects the sub-channel audio signal from the language type signal for second native language identification from the native language identification device 8 and the language type signal for first native language identification from the native language identification device 9. The selector switch 1.2 is changed so as to lead to the amplifier 3.4, and the speaker 5.6 outputs audio in the first native language. In addition, in stereo broadcasting in which both the main channel and the sub-channel are the audio of the first native language, the main channel's audio signal is output to the speaker 5,
The audio signal of the subchannel is outputted to the speaker 6. Conversely, if both channels are different from the set native language, press the selector switch l.

2 is held in the previously switched state. For example, when switching between audio and music, no identification is made for music, and the switching state previously set for audio is maintained.

Note that when the native language is not set in the native language setting device 11 or when all native languages are set incorrectly, the output audio selection circuit 10 is configured to automatically select the first native language, and furthermore, when the first native language is automatically selected, It can also be configured to memorize the normally set native language and select it.

Therefore, according to this embodiment, even if the broadcasting station randomly changes the audio signal of one or more channels to multiple languages, the receiving side can always preferentially listen to the audio signal of the set native language. To eliminate the need for the troublesome operation of switching and setting every time the receiving language is changed, as in the past.

G1 Effects of the Invention As described above, according to the present invention, the audio signal of the language to be set from the received and demodulated audio signals of audio multiplex broadcasting is given priority as audio output, so the audio language can be changed randomly on the broadcasting side. Even when the receiving side listens in the set language, the receiving side is automatically switched to listen in the set language, eliminating the need for the conventional troublesome operation of switching and searching for the desired language every time the language is changed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a conventional block diagram. 1.2... Selector switch, 8.9... Native language identification device 4.10... Output audio selection circuit, l! ...Native language setting device.

Claims (1)

[Claims] (1) A native language identification device for identifying the language type from the acoustic parameters of the received and demodulated audio signals of the main channel and the sub-channel, in an audio multiplex broadcast receiving device that transmits and receives audio signals on the main channel and the sub-channel, respectively. and output audio selection means for obtaining audio output by preferentially capturing the audio signal that matches the language type signal of the native language identification device and a preset language. Receiving device.