What is Frequency Response? How to choose the best and most standard speakers?

In addition to factors such as speaker power and sensitivity, frequency response is one of the parameters of headphones or speakers that you also pay attention to when choosing. Let’s learn more about frequency response and how to choose a good speaker with Tnhelearning.edu.vn!

What is frequency response? Why is frequency response important?

Frequency response is also known as Frequency Response or frequency response. Frequency response is simply understood as a quantity that tells what frequency range the ability to emit sound is in .

For example, a speaker with a frequency response of 30Hz – 20kHz means that the lowest bass is 30Hz and the highest is 20kHz . Depending on the needs of use, users choose speakers with different frequency response.

Frequency response plays an important role in audio equipment to have the most accurate high, mid, and bass sound output.

Frequency response characteristics

Some salient features of frequency response that you should know are as follows:

• The frequency response will give a graph in the form of a line, with the aim of helping users to know the approximate distance in advance so as not to affect the sound quality .
• The frequency response is characterized by the amplitude of the system, usually measured in decibels (dB) or decimals , and phase measured in radians or degrees, compared to frequency measured in radians/second or Hertz (Hz). ) .
• When a device reproduces frequencies in a given frequency band, with equal importance, relative to the magnitude of the frequencies present in the INPUT signal, the response curve of the device is said to be flat in the frequency range. that frequency.
• Not all devices can see a flat response curve in the audio spectrum, the only characteristic is usually the audio amplifier (Amplifier). In addition, mixers or other ideal signal processing equipment will also display this characteristic throughout the entire audio spectrum.

• Any specification of the frequency response is not shown as a graph, there is a minimum tolerance in loudspeakers usually ±3dB i.e. plus or minus 3dB . The specification also needs to be qualified to meet the full range to remain within specified tolerances.
• With the ±3dB parameter, there will be a total of 6dB up and down in the quoted frequency response. In the case of high-quality amplifiers or signal processors, tolerances will also be able to be specified more than ±1dB over most audio spectrums.

Speaker frequency response ranges

Currently, there are 3 frequency response ranges of speakers including:

Bass Frequency

This is the most misaligned frequency range in audio. Bass speakers have lower sound frequencies, the sound will be rounder even with light sounds like water drops, rain, etc.

Bass frequencies are divided into 3 categories:

• Low Bass (Deep bass): 20Hz – 80Hz
• Mid Bass: 80Hz – 320Hz
• High Bass: 320Hz – 500Hz

Mid . sound frequency

The frequency range that is common in nature, such as human voices, ocean waves, … can all be heard by the ears when the sound is in this frequency range. Mid sound frequencies have clarity, detail and clarity that is the criterion for good Mid frequency frequencies.

• Low mid: 500Hz – 1kHz
• Mid: 1kHz – 2kHz
• High mid: 2kHz – 6kHz

Treble sound frequency

Treble frequency range has a frequency range from about 6kHz to 20kHz , Treble tone helps to give detailed, bright sound emanating through each track. According to researches in the world, sound frequencies higher than 20kHz, although not perceived by humans, help users listen to music better.

Application of frequency response

• In the field of electronics, this frequency response is an input signal.
• In terms of audio amplification techniques, the frequency response connects the electronic amplifier, microphone and speaker.
• In the radio spectrum it is possible to refer to measurements of coaxial cable, twisted pair cable, video switches, wireless communication equipment and antenna systems.
• In addition, there are several frequency response infrasound including earthquake and EEG (brain waves).

Frequency response has different requirements depending on the application. For example, to amplify high-pitched sounds , an amplifier requires a frequency response of at least 20 – 20,000Hz, with an accuracy tolerance of ±0.1dB in mid-range frequencies around 1000Hz.

However, in telecommunications , a frequency response of 400 – 4,000Hz, with a tolerance of ±1dB is sufficient to understand the content of the conversation.

How to choose a speaker with a good frequency response?

The frequency response of the speakers corresponds to the sonic performance of each speaker , thereby helping you to choose your speakers more precisely and specifically.

One of the breakthroughs is that the wider the speaker frequency range, the more music can be played, thereby enjoying different sound quality and emotions.

Performance and sound quality are not determined solely by a speaker that can reproduce a certain frequency range. If your speaker causes the original music to lose some color or overall quality, it’s not a great speaker.

At the same time, the music coming from your speakers will sound like a band or orchestra playing. The speaker has to be able to reproduce even the most complex sounds with all sorts of different frequencies , and it has to do it at the same time and in a balanced way.

One thing you should keep in mind before choosing a speaker is determining the intended use. Because nowadays speakers are manufactured to meet different uses.

For example, low-frequency speakers will respond to powerful music such as remix, dance music, .. Or Mid- range or Treble speakers are suitable for listening to music, or high-quality music hum, humming.

As such, understanding a speaker’s frequency response can help you be more proactive in your purchasing decisions.

Hopefully the above article will help you understand more about what Frequency Response is and how to choose the best and most standard speakers. If you have any questions, please leave a comment below to be answered!