JPH0276382A - Speaker system built-in type television set - Google Patents

Abstract

PURPOSE:To prevent separation of sound and to allow a viewer to listen to the sound as if it were sounded form the mouth of a person reproduced as a video image on the screen by locating the acoustic radiation face center of a tweeter lower than the acoustic radiation face center of a woofer and locating the acoustic radiation face center of a high pitched tone lower than the vertical center of the cathode ray tube. CONSTITUTION:An ultrahigh pitched sound speaker 3 is provided aside a woofer 2. Thus, the sound sources are as if being in the same height as the audible psychology. Moreover, as to an audio signal having a frequency of 5-10kHz reproduced by a tweeter 1 provided under the woofer 2, the sound source is located as if being at the same height as the woofer from the listening sense. Thus, as a result, since the sound sources are concentrated on the same height as to all audio bands, separation of sound is avoided and the articulation of voice is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a television with a built-in speaker system that simultaneously reproduces video and audio.

2. Description of the Related Art In recent years, televisions with built-in speaker systems have been designed to have larger video playback screens and to improve the sound quality of audio playback.

An example of the above-mentioned conventional television with built-in speaker system will be described below with reference to the drawings.

FIG. 4 shows a conventional television with a built-in speaker system. In FIG. 4, 7 reproduces the audio signal of the entire frequency range with high power.

5 is a cathode ray tube, which reproduces images; 6 is a cabinet, which houses a speaker and a cathode ray tube.

The video signal to be reproduced is a demodulated television broadcast or a video input from the outside, and the audio signal is also demodulated or input from the outside in synchronization with the video signal. Video and audio are played at the same time, and in scenes where people are talking, the speaker is placed as close as possible to the side of the cathode ray tube in order to make it as confusing as possible to hear the voice coming from the mouth of the person speaking. Things are being done.

Problems to be Solved by the Invention According to auditory psychology experiments, humans have an auditory psychology in which they perceive that a sound source is located above the actual position of the sound source in a band of about 5 kHz to 10 kHz. Due to the influence of this auditory psychology, sounds with a wide frequency range such as the human voice are separated into upper and lower parts, which not only makes it difficult to hear the voice coming from the person's mouth, but also makes it difficult to understand the speech. However, there was a problem in that it decreased.

In view of the above-mentioned problems, the present invention prevents the separation of sounds by making sounds in the frequency range of about 5 kHz or more psychologically audible from the same position as sounds in the frequency range of about 5 kHz or less. To provide a television with a built-in speaker system that makes the user feel as if the voice is heard from the mouth and improves the intelligibility of the voice.

Means for Solving the Problems In order to solve the above problems, a television with a built-in speaker system of the present invention includes a bass speaker that reproduces signals in a frequency range of approximately 5 kHz or less, and a bass speaker that reproduces signals in a frequency range of approximately 5 kHz or more. It is equipped with a high-pitched speaker for sound, and a cathode ray tube for playing video, with the sound emitting surface of each speaker on the left side of the cathode ray tube.

Located on either or both of the right sides, the center of the high-frequency sound radiation surface is located below the center of the low-frequency sound radiation surface, and the center of the high-frequency sound radiation surface is further below the vertical center position of the cathode ray tube. It is equipped with a configuration of providing a.

According to the above-described configuration, the present invention has the configuration described above.
Due to psychoacoustic considerations, the position of the high-frequency speaker that a person feels can hear when a signal of 5 kHz or higher is reproduced matches the actual position of the low-frequency speaker that reproduces a signal of 5 kHz or lower. Separation will be suppressed.

Embodiment Hereinafter, a television with a built-in speaker system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a television with a built-in speaker system according to a first embodiment of the present invention. In Figure 1, l
2 is a treble speaker that reproduces audio signals of approximately 5 kHz or more, and 2 is a bass speaker that reproduces audio signals of approximately 5 kHz or less.

The operation of the built-in speaker system television configured as described above will be explained below with reference to FIGS. 2 and 3.

First of all, FIG. 2 is a flow diagram of the audio signal applied to the high-frequency speaker 1 and the low-frequency speaker 2, and the audio signal, which has been converted to 1iPI by the TV tuner 8, is amplified by the power amplifier 9 and then output to approximately 5k) Iz. The signal is applied to the high-frequency speaker 1 via the high-pass filter 10 of 10, and is applied to the bass speaker 2 via the low-pass filter 11 of about 5 to 7. Note that since the bass speaker 2 generally has poor high-frequency reproduction ability, it may be driven directly from the power amplifier 9 without passing through the low-pass filter 11.

Next, FIG. 3 is a cross-sectional side view of the speaker system part of the television with a built-in speaker system according to the present invention, showing the actual position of the treble speaker 1 and the sound emitted by the treble speaker l. It shows the virtual loudspeaker 101 for high-pitched sounds located in the direction that a person feels when listening, shows the propagation state of the sound emitted from the loudspeaker and the position of the ear, and shows the arrival direction of the sound that the person feels when listening to high-pitched sounds. Indicated by arrows. The position of the bass speaker 2 is the same both in reality and in the auditory sense.
1 position and one loss. This gives the impression that the sound is coming from the same location in all frequency bands, making it possible to reproduce sound without separating it into upper and lower regions.

Conventional television broadcasting did not often include audio signals of approximately 10k) tz or higher, but recently TVs with built-in speaker systems have been used as video decks and video disc playback devices, so L
It has become necessary to reproduce audio signals of OkHz or higher. In the embodiment shown in FIG. 5, numeral 3 is an ultra-high-pitched speaker that reproduces audio signals of approximately 10 kHz or higher, and at this time, the treble speaker 1 reproduces audio signals of approximately 5 kllz.
The bass speaker 2, the treble speaker 1, and the super treble speaker 3 are each connected after the power amplifier 9 as shown in FIG. Filter 11 Bandpass filter 12 from approximately 5kHz to 10kHz
, is driven through an ultra-high pass filter 13 of about 10 kHz or higher.

According to the results of psychoacoustic experiments, audio signals with a frequency of approximately 10 kHz or higher do not give the impression that the sound source is above the actual sound source, and it is desirable that the audio signal be located higher than the high-frequency speaker 1. The bass speaker 3 is installed next to the bass speaker 2, so that the sound source is perceived to be at the same height from a psychological standpoint. For audio signals in between, the sound source is perceived to be at the same height as the bass speaker, and as a result, the sound source is concentrated at the same position for all audio bands, so there is no separation of sounds and the intelligibility of speech is reduced. improves.

FIG. 7(a) shows a cross-sectional view of the speaker system part,
FIG. 7(B) is an overall view of one embodiment of the present invention of a television with a built-in speaker system. In the embodiment shown in FIG. 7, reference numeral 102 is a high-pitched sound tube having a sound radiation surface that is substantially in the same plane as the front surface of the cathode ray tube 5, and is a high-pitched sound tube 102.
The sound emitted by the device is collected and radiated into the space from an acoustic radiation surface. 2
Reference numeral 01 is a bass sound tube having a sound radiation surface that is substantially in the same plane as the front surface of the cathode ray tube 5, which collects the sound emitted from the bass speaker 2 and radiates it into space from the sound radiation surface.

In this embodiment as well, the sound radiation surface of the treble sound tube 102 is set below the sound radiation surface of the bass sound tube 201, and the same effect as in the embodiment shown in FIG. 1 can be obtained.

In the embodiment shown in FIG. 8, speaker systems having the configuration shown in FIG. 1 are provided on both sides of the cathode ray tube 5, so that stereo audio signals can be reproduced.

By applying the same signal to both the left and right speaker systems, the imaginary sound source produced by both speaker systems is localized on the cathode ray tube 5 without separation of sounds. When the high-pitched sound speaker l is located above the vertical center of the cathode ray tube 5, the created imaginary sound source is biased toward the upper side of the cathode ray tube 5. This is undesirable in view of the fact that when a speaker is reflected on the cathode ray tube 5, the mouth of the speaker will be biased toward the bottom of the cathode ray tube 5. Therefore, the high-frequency speaker l should be located below the vertical center of the cathode ray tube 5. It passes as a TV with a built-in system.

FIG. 9(a) shows a cross-sectional view of the speaker system part,
FIG. 9 et al.) are general views of one embodiment of the present invention of a television with a built-in speaker system. In the embodiment shown in FIG. 9, 14 is a full-range speaker capable of reproducing all audio bands, 141 is a diaphragm that mainly reproduces high-pitched sounds, and 14 is a full-range speaker capable of reproducing all audio bands;
2 is a diaphragm that reproduces bass sounds. Reference numeral 15 designates a band-separated acoustic tube provided in front of the full-range speaker 14 and having an acoustic tube that mainly passes high and low frequencies, respectively;
Reference numeral 53 denotes a high-frequency sound passing sound tube provided in front of the diaphragm for reproducing high-pitched sounds, 151 a low-frequency sound passing sound pipe, and 152 a high-frequency sound blocking sound-absorbing material for attenuating high-pitched sounds entering the low-frequency sound passing sound pipe 151. The same effect as the embodiment shown in FIG. 1 can be obtained by installing the sound radiation surface of the low-frequency sound pipe 151 above the sound radiation surface of the high-frequency sound pipe 153.

Effects of the Invention As described above, the present invention includes a bass speaker for reproducing signals in a frequency range of approximately 5kl and below, a treble speaker for reproducing signals in a frequency range of approximately 5kHz or more, and a cathode ray tube for reproducing images. , the sound radiation surface of each speaker is installed on either the left side, the right side, or both of the cathode ray tube, and the center of the high sound sound radiation surface is installed below the center of the low sound sound radiation surface, and the center of the high sound sound radiation surface is placed below the center of the high sound sound radiation surface. By installing the treble speaker below the vertical center of the cathode ray tube, when a signal of 5kHz or more is played from the treble speaker, the position of the treble speaker where a person feels that they can hear the signal is lower than the 5kHz signal due to auditory psychology. This will match the actual position of the bass speaker that is playing the
Separation of sounds is suppressed in terms of auditory sense, making it possible to listen to audio with high intelligibility.

[Brief explanation of the drawing]

1, 5, 5, 7, 8, and 9 are explanatory diagrams showing an embodiment of a television with a built-in speaker system according to the present invention, and FIG. 4 is an explanatory diagram showing a conventional television with a built-in speaker system. Figures 2 and 6 are explanatory diagrams showing the flow of audio signals applied to each speaker, and Figure 3 is an explanatory diagram showing the flow of audio signals applied to each speaker, and Figure 3 shows that due to auditory psychology, the perceived position of the high-pitched speaker's sound source has moved upwards. It is a conceptual diagram which shows that it corresponds to the position of the bass speaker. 1...Treble speaker, 2...Bass speaker, 3...Ultra-treble speaker, 5...
... Braun tube, 6... Cabinet, 7.
...Speaker, 8 ...TV tuner,
9...Power amplifier, 10...High pass filter, 11...Low pass filter, 1
2...Band pass filter, 13...
Ultra high-pass filter, 14...Full-range speaker, 15...Band separation acoustic tube. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 1 φ-f, Ji-net? Ihe Temple Zuhi Ichiriki 112 Figure 3 Figure 14 Figure 7 Zubiichika for strawberry meeting

Claims (3)

[Claims] (1) Equipped with a bass speaker that reproduces signals in a frequency range of approximately 5 kHz or less, a treble speaker that reproduces signals in a frequency range of approximately 5 kHz or more, and a cathode ray tube that reproduces images, and the acoustic radiation surface of each speaker. is located on either the left side, the right side, or both of the cathode ray tube, and the center of the treble sound radiation surface is located below the center of the bass sound radiation surface, and the center of the treble sound radiation surface is located at the vertical center of the cathode ray tube. A television with a built-in speaker system that is located at a lower position. (2) A high-pitched speaker that reproduces a frequency range from approximately 5 kHz to 10 kHz, and is equipped with an ultra-high-pitched speaker that reproduces a frequency range of approximately 10 kHz or more, and the center of the ultra-high-pitched sound radiation surface is the center of the high-pitched sound radiation surface. 2. The television with a built-in speaker system according to claim 1, wherein the television is located above the speaker system. (3) A claim characterized in that a sound radiating surface for bass sounds and a sound radiation surface for treble sounds are formed by providing an acoustic tube through which bass and treble sounds mainly pass in front of a speaker capable of reproducing both bass and treble sounds ( 1) Television with built-in speaker system as described above.