Although most of the audio equipment has been digitalized, one thing I have to admit is that the two ends of the timbre equation-input and output-are still analog in nature. Just as audio experts began to embrace digital technology, IT engineers also began to study acoustic language. And the first obstacle they encounter is often the network meeting and discussion system.
Clarity is the key
First of all, the meaning of sound quality is not absolute. It depends on the environment. The meaning of "good sound quality" is not the same as the meaning of "good sound quality" music.
The reasons are as follows:
Music is about fidelity.
To obtain good sound quality in music, the complete frequency range of the musical instrument needs to be reproduced. The harmonious fusion of the fundamental frequency and the overtone frequency can produce an extraordinary sense of beauty, and the reverberation in the room can further enhance this feeling. On the other hand, speech is about clarity, which is very different. The ultimate goal of clarity is to be able to simply distinguish what each word is. It seems very simple, right? But in fact, the interference caused by noise has a significant impact on our accurate speech perception.
Have you ever tried to chat in an old tall auditorium? Delayed reflections can make music richer and more solemn, but it is the greatest enemy of clarity.
Voice intelligibility is the most important in corporate, institutional, and government environments.
You hope the CEO’s speech sounds good. You hope that the academic report can be fully understood. Members want everyone to hear their voices. The factors that may affect audibility in a meeting or meeting need to be reduced or eliminated.
It all starts with the microphone
The sound quality of the system is determined by the weakest link, so it is crucial to capture high-quality audio at the source. The microphone is still the starting point to achieve this goal.
The main types of microphones used in conference rooms or conference rooms are bracket-mounted and wearable. Special types such as surface-mounted or suspended microphones are not uncommon. For use scenarios such as voice and speech, certain design elements are common. Most will have built-in blowout guards and shock absorbers to minimize noise. Size, shape, weight, and look are also important design considerations.
Even in relatively stable situations such as permanently installed microphones used for conferences and meetings, it is difficult to give a general rule for choosing the correct microphone. The system you want to use—for example, a system that allows the audience to speak, and a system that is suitable for lectures (with a main speaker)—will affect the type of microphone that is most suitable for this task to a certain extent. Although the basic principles are common, different types of microphones have different methods to prevent unexpected problems.
How to set up and use microphones in talks and meetings
Here are some simple settings and tips for you to share with your IT colleagues and spokespersons before the meeting to improve the clarity of the meeting or meeting scenario.
·Speaking should be clear and natural.
·Aim the microphone at the mouth and deviate from any other noise sources.
·Avoid holding the microphone excessively, knocking on the table, turning over papers, etc.
Next, let's take a look at the types of microphones that you may have installed in the conference or discussion system, as well as some tips for each type of microphone:
If you want a balanced, natural sound, place the microphone 4 to 12 inches in front of your mouth and slightly off the center axis to avoid breathing noise.
Too close to a unidirectional microphone will cause popping noise due to the proximity effect. This kind of excessive bass can be adjusted by the equalizer (low frequency attenuation).
Speaking too directly into the microphone can cause breathing noise. Use the accessory blowout shield to control the breathing noise of people who are too close to the speaker.
Use: Only hold the barrel when using. Do not grab or hold the microphone grille, as this will affect its pointing characteristics.
Place the microphone 8 to 16 inches in front of your mouth, slightly off the center axis. Aim directly below your mouth to avoid breathing noise.
After placing it for the speaker, do not touch the microphone or gooseneck accessories.
Keep a fixed distance from the microphone to ensure a stable volume.
Do not tap or blow into the microphone.
Place the microphone as close to the mouth as possible, preferably just under the neckline.
Avoid placing it under clothing or other materials that may touch or rub the microphone.
Use a windshield, especially a unidirectional lavalier microphone.
To make sure that you "talk into the microphone all the time," turn around instead of turning your head.
Even the slightest noise will be introduced into the sound system by a lavalier microphone. As long as you put it on, don't touch the microphone or cable.
Avoid blowing directly into the microphone.
Do not place the microphone directly in front of your mouth, as this will pick up breathing noise.
Place the microphone at the corner of your mouth and don't touch your face.
Use a windshield to eliminate breathing noise.
Adjust the headband to ensure a stable and comfortable wearing.
Do not tap or hold the microphone.
The computer needs accurate data to produce reliable results, and the sound system is the same: only when it receives high-quality sound, can it produce the same quality sound. This may be a good start: use your microphone correctly and systematically