| Foreword: [How to calculate a good car audio, in the IASCA standard, it includes good sound quality, safe circuit, complete installation, beautiful craftsmanship, unique creativity, accurate frequency response, bursting sound Pressure. It’s a pity that Chinese car owners are the busiest people in the world. They are eager for a CAR AUDTO SYSTEM that reflects their personal tastes regardless of their appearance. However, they don’t have enough time for the audio conversion shop to fulfill his requirements. The refit shop has to show its professional level, so the streets and alleys are filled with the results of the process and process. I want to tell the majority of car owners that if you are unfamiliar with the appearance of the process requirements, a sound system with good sound quality is your favorite. |
What is the good sound quality in car audio ? Most of the peers and enthusiasts will use the home audio as a reference. The sound field positioning music reproduction of the home audio is indeed the goal pursued by car audio , but it is like the magic in the car audio . The live sound is not comparable to the average home audio, so I added another reference for the car audio - headphones, you see the official if you have used excellent headphones to enjoy the music, I believe you will remember that let you float It’s too imaginary. In the narrow, closed, and strong absorption environment of the car, the ultra-wideband and balanced frequency response of the earphone is the "Utopia" that the car audio is looking for.
How to evaluate the sound quality of a car audio ? Please allow me to share the review rules of the International Car Audio Contest.
1. The accuracy of the tone and the balance of the full frequency band
2. Sound field and hall sound
3. Audio and video positioning
4. Sound linearity
Among them, the accuracy of the tone and the balance of the full frequency band are the main parts, and the accuracy of the tone is affected by the six characteristics:
1. LOUNDESS It refers to the intensity of the auditory stimuli caused by the sound. She is affected by the poor sound pressure of the EQ or the horn;
Second, the pitch (PITCH) determines the position of the sound on the sound spectrum, it is a subjective quality, excessive distortion and nonlinearity will affect the pitch three, the tone (T NB wangwang) 'it is the pitch of a sound by overtone The characteristics of the sound produced after the interaction, which is related to the nature of the equipment and the wire;
4. Modulation (MODULAT 0N) It ​​refers to the change in the sound in size, phase or frequency, which is affected by the phase and frequency response of the system;
Fifth, the length of the sound (DURATI0N) It ​​is the length of time of the sound. She will react to the state of the system or the effects of baffle resonance;
6. ATTACK AND DECAY The time required for the sound to grow from small to large (the lyrics) and the time (attenuation) required for the big and small, it will be due to poor system response, baffle resonance and pre-reflection Too strong and badly affected.
According to the above six points, we can divide the sound into four frequency bands for identification. Ultra-low frequency (18-60Hz) This band represents the lowest frequency of all large stringed instruments, bass drums, bass synthesis 9S, organ. The sound of this frequency band should be clearly and vividly recognized by the system, with real sense of volume and elasticity, good extension, and must not be distorted. The common defect in this band is that the ultra-low frequency appears to be muddy due to excessive decay time or blurred sound. The lowest frequency band of the organ is a good example. Medium-low frequency (60-200Hz) It represents medium-sized drums (Indian drums, big Latin drums), the middle of bass guitars and bass, the bass of piano and sound synthesizers, which requires a smooth reproduction of elastic and detailed sounds. The difficulty is the performance of the drum and bass guitar; the middle sound and the broken sound. This is a frequency band that makes all audio conversion shops extremely painful, because in the car body, there will be resonance or peaks in this frequency band, which will affect the accurate reproduction of sound.
The first part of the "California Hotel" drum test is to test the preferred music, a good system should show the drum skin tension, size and impact of the hand drum, the common flaw we have is the drum sound is an exaggerated low frequency synthesizer the sound of. IF (200-3000Hz) This is an important frequency band. It contains most of the music information. It is also the most sensitive frequency band of the human ear. The distinction between excellent speakers and ordinary speakers is in this frequency band, which is basically based on human voice. The vocals should sound real and full without unnatural feelings such as bleakness or distortion. High frequency (3000-20000Hz) is conducive to the normal operation of high frequency in the environment of strong reflection in the car. However, due to the influence of installation position and improper attenuation, the high frequency of most car audio will be too bright and exposed. Rough texture and excessive tongue and sound. After the independent evaluation of the four frequency bands, we must consider the balance of the music's full frequency band. It shows the pitch accuracy of the system within the entire audio bandwidth. You can understand it as a music team competition. The match will be much more powerful than a world champion with a few hairy boys. The common balance defect in China is the ultra-low frequency infinite amplification, which also causes many owners who do not like to install the subwoofer!
What is the good sound quality in car audio ? Most of the peers and enthusiasts will use the home audio as a reference. The sound field positioning music reproduction of the home audio is indeed the goal pursued by car audio , but it is like the magic in the car audio . The live sound is not comparable to the average home audio, so I added another reference for the car audio - headphones, you see the official if you have used excellent headphones to enjoy the music, I believe you will remember that let you float It’s too imaginary. In the narrow, closed, and strong absorption environment of the car, the ultra-wideband and balanced frequency response of the earphone is the "Utopia" that the car audio is looking for.
How to evaluate the sound quality of a car audio ? Please allow me to share the review rules of the International Car Audio Contest.
1. The accuracy of the tone and the balance of the full frequency band
2. Sound field and hall sound
3. Audio and video positioning
4. Sound linearity
Among them, the accuracy of the tone and the balance of the full frequency band are the main parts, and the accuracy of the tone is affected by the six characteristics:
1. LOUNDESS It refers to the intensity of the auditory stimuli caused by the sound. She is affected by the poor sound pressure of the EQ or the horn;
Second, the pitch (PITCH) determines the position of the sound on the sound spectrum, it is a subjective quality, excessive distortion and nonlinearity will affect the pitch three, the tone (T NB wangwang) 'it is the pitch of a sound by overtone The characteristics of the sound produced after the interaction, which is related to the nature of the equipment and the wire;
4. Modulation (MODULAT 0N) It ​​refers to the change in the sound in size, phase or frequency, which is affected by the phase and frequency response of the system;
Fifth, the length of the sound (DURATI0N) It ​​is the length of time of the sound. She will react to the state of the system or the effects of baffle resonance;
6. ATTACK AND DECAY The time required for the sound to grow from small to large (the lyrics) and the time (attenuation) required for the big and small, it will be due to poor system response, baffle resonance and pre-reflection Too strong and badly affected.
According to the above six points, we can divide the sound into four frequency bands for identification. Ultra-low frequency (18-60Hz) This band represents the lowest frequency of all large stringed instruments, bass drums, bass synthesis 9S, organ. The sound of this frequency band should be clearly and vividly recognized by the system, with real sense of volume and elasticity, good extension, and must not be distorted. The common defect in this band is that the ultra-low frequency appears to be muddy due to excessive decay time or blurred sound. The lowest frequency band of the organ is a good example. Medium-low frequency (60-200Hz) It represents medium-sized drums (Indian drums, big Latin drums), the middle of bass guitars and bass, the bass of piano and sound synthesizers, which requires a smooth reproduction of elastic and detailed sounds. The difficulty is the performance of the drum and bass guitar; the middle sound and the broken sound. This is a frequency band that makes all audio conversion shops extremely painful, because in the car body, there will be resonance or peaks in this frequency band, which will affect the accurate reproduction of sound.
The first part of the "California Hotel" drum test is to test the preferred music, a good system should show the drum skin tension, size and impact of the hand drum, the common flaw we have is the drum sound is an exaggerated low frequency synthesizer the sound of. IF (200-3000Hz) This is an important frequency band. It contains most of the music information. It is also the most sensitive frequency band of the human ear. The distinction between excellent speakers and ordinary speakers is in this frequency band, which is basically based on human voice. The vocals should sound real and full without unnatural feelings such as bleakness or distortion. High frequency (3000-20000Hz) is conducive to the normal operation of high frequency in the environment of strong reflection in the car. However, due to the influence of installation position and improper attenuation, the high frequency of most car audio will be too bright and exposed. Rough texture and excessive tongue and sound. After the independent evaluation of the four frequency bands, we must consider the balance of the music's full frequency band. It shows the pitch accuracy of the system within the entire audio bandwidth. You can understand it as a music team competition. The match will be much more powerful than a world champion with a few hairy boys. The common balance defect in China is the ultra-low frequency infinite amplification, which also causes many owners who do not like to install the subwoofer!
What is the good sound quality in car audio ? Most of the peers and enthusiasts will use the home audio as a reference. The sound field positioning music reproduction of the home audio is indeed the goal pursued by car audio , but it is like the magic in the car audio . The live sound is not comparable to the average home audio, so I added another reference for the car audio - headphones, you see the official if you have used excellent headphones to enjoy the music, I believe you will remember that let you float It’s too imaginary. In the narrow, closed, and strong absorption environment of the car, the ultra-wideband and balanced frequency response of the earphone is the "Utopia" that the car audio is looking for.
How to evaluate the sound quality of a car audio ? Please allow me to share the review rules of the International Car Audio Contest.
1. The accuracy of the tone and the balance of the full frequency band
2. Sound field and hall sound
3. Audio and video positioning
4. Sound linearity
Among them, the accuracy of the tone and the balance of the full frequency band are the main parts, and the accuracy of the tone is affected by the six characteristics:
1. LOUNDESS It refers to the intensity of the auditory stimuli caused by the sound. She is affected by the poor sound pressure of the EQ or the horn;
Second, the pitch (PITCH) determines the position of the sound on the sound spectrum, it is a subjective quality, excessive distortion and nonlinearity will affect the pitch three, the tone (T NB wangwang) 'it is the pitch of a sound by overtone The characteristics of the sound produced after the interaction, which is related to the nature of the equipment and the wire;
4. Modulation (MODULAT 0N) It ​​refers to the change in the sound in size, phase or frequency, which is affected by the phase and frequency response of the system;
Fifth, the length of the sound (DURATI0N) It ​​is the length of time of the sound. She will react to the state of the system or the effects of baffle resonance;
6. ATTACK AND DECAY The time required for the sound to grow from small to large (the lyrics) and the time (attenuation) required for the big and small, it will be due to poor system response, baffle resonance and pre-reflection Too strong and badly affected.
According to the above six points, we can divide the sound into four frequency bands for identification. Ultra-low frequency (18-60Hz) This band represents the lowest frequency of all large stringed instruments, bass drums, bass synthesis 9S, organ. The sound of this frequency band should be clearly and vividly recognized by the system, with real sense of volume and elasticity, good extension, and must not be distorted. The common defect in this band is that the ultra-low frequency appears to be muddy due to excessive decay time or blurred sound. The lowest frequency band of the organ is a good example. Medium-low frequency (60-200Hz) It represents medium-sized drums (Indian drums, big Latin drums), the middle of bass guitars and bass, the bass of piano and sound synthesizers, which requires a smooth reproduction of elastic and detailed sounds. The difficulty is the performance of the drum and bass guitar; the middle sound and the broken sound. This is a frequency band that makes all audio conversion shops extremely painful, because in the car body, there will be resonance or peaks in this frequency band, which will affect the accurate reproduction of sound.
The first part of the "California Hotel" drum test is to test the preferred music, a good system should show the drum skin tension, size and impact of the hand drum, the common flaw we have is the drum sound is an exaggerated low frequency synthesizer the sound of. IF (200-3000Hz) This is an important frequency band. It contains most of the music information. It is also the most sensitive frequency band of the human ear. The distinction between excellent speakers and ordinary speakers is in this frequency band, which is basically based on human voice. The vocals should sound real and full without unnatural feelings such as bleakness or distortion. High frequency (3000-20000Hz) is conducive to the normal operation of high frequency in the environment of strong reflection in the car. However, due to the influence of installation position and improper attenuation, the high frequency of most car audio will be too bright and exposed. Rough texture and excessive tongue and sound. After the independent evaluation of the four frequency bands, we must consider the balance of the music's full frequency band. It shows the pitch accuracy of the system within the entire audio bandwidth. You can understand it as a music team competition. The match will be much more powerful than a world champion with a few hairy boys. The common balance defect in China is the ultra-low frequency infinite amplification, which also causes many owners who do not like to install the subwoofer!
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