What is a DSP signal processor? Application of DSP digital audio signal processor

For dedicated sound systems, they are equipped with equipment systems such as speakers, microphones, amplifiers, … especially digital audio signal processors or DSPs, in order to improve sound quality. bar. So what is a DSP signal processor, what are the applications of the DSP digital audio signal processor. Let’s find out the article with Tnhelearning.edu.vn below!

What is a DSP signal processor?

Digital Signal Processing, also known as digital signal processing, aims to process the signal as a sequence of represented numbers. Signal processing consists of two parts, digital signal processing and analog signal processing.

DSP for digital signal processing technology is one of the developing technologies in the electronics and telecommunications industries .

Digital signal processing is applied in fields such as biomedical electronics, speech processing, speech, sound, … and improving image quality. Digital signal processing technology is applied advanced WMV and MPEG compression technologies.

The DSP audio signal processor used in the audio field is equipped with many features. Users can use it with the support of the connected software on the phone or computer.

Although there are many DSP devices on the market to serve different needs, most devices will share the following outstanding features:

• Limit the sound output scale to protect your home’s speaker system.
• In order for your speakers to adapt to many spaces, manufacturers have added an equalization function.
• Sub and full range speakers are divided into frequency ranges.
• Audio phase inversion function to suppress or resonate more sound.
• Watch the sound for the speaker system.
• Dramatically reduces fluctuations for smoother tonality.

With DSP signal processors manufactured from different brands, the function is also different to meet the diverse needs of users. But in general, DSP signal processors still have basic functions on top of other functions to improve sound quality.

Common applications of DSP

DSP technology is mainly used in different filter positions to avoid audio interference . For the audio filters of the given standard audio, an audio band is called the passband (bandwidth).

In order to avoid interference with adjacent channels, traditional analog receivers support narrowband filtering, to give you a signal at a narrower bandwidth.

For narrowbands, the audio in the narrower band emits other signals that can affect the signals you’re hearing. Because the filter position is quite narrow, narrower band audio can pass through and the output signal will sound as if it were blocked. There are some filters that have an extremely narrow band when passing through audio that is too small and has almost no effect on voice transmissions.

Typical uses of DSP signal processing equipment

DSP audio signal processor is applied in sound systems used for performances such as sound systems in halls, restaurants, … to professional events , meeting the needs of the majority of users.

This is considered one of the signal processors with outstanding features, equipped with many individual devices, so they are quite expensive.

To limit costs, users often choose to buy each device according to each function such as equalizer (equalizer), crossover (crossover), … to equip their sound system.

However, the difficulty here is that users have to adjust to each device to have good sound quality, but it is not possible to do without professional knowledge. This shows that using a DSP sound processor will be extremely convenient.

In addition, separating many devices leads to too much space and being able to buy each device separately is also more expensive than buying a single DSP processor.

Users can adjust the function of the audio processor on the computer. You should also save the configuration for future use, because depending on the case, the adjustment method is also somewhat different. Besides, if in simple cases, you can adjust right on the device.

The DSP sound processor plays the role of enhancing the efficiency and quality of your home’s sound system and overcoming unnecessary inconveniences during use.

The most popular types of DSP today

DSP audio processors fall into two main categories:

DSP Digital Processor

DSP Digital Processor (digital processing) has the role of helping users adjust the sound through software on the phone or computer.

Common features equipped on Digital Processor such as audio frequency division, timbre rebalancing, speaker protection or effective limiting of the sound scale, etc.

Some reputable brands use Digital Processor in devices you can refer to such as Processor Lake, Soundking and DAS or Inter – M, etc.

DSP Compressor

For the DSP Compressor processor (compressor) has the ability to create balance and make the sound smoother .

Thanks to the help of a mechanism that reduces the difference in the sound and the volume of the sound, it makes the difference between loud and low volume levels. This mechanism makes the sound clearer and clearer. Some of the well-known DSP Compressor processor brands are ART and Soundking.

Features you need to keep in mind when choosing a DSP

Here are some features you need to keep in mind when choosing a DSP:

Time Alignment (Delay)

Because of the characteristics of sound waves that travel through the air quite slowly, it will make a difference between other speakers from the position of the operator. By Delaying the sound from the nearest speaker, this way allows to rearrange the sound, limiting the situation of sound coming from behind .

This effectively improves the sound, giving you an immersive auditorium-like audio experience.

Crossover

The crossover filter has the ability to remove bad sound , but this can cause distortion in the sound of the woofers and treble speakers. The most suitable crossover filter is to include the tonal range from 20 Hz to 20 kHz , which will be the range that will help keep the sound distortion-free.

Equalization

Equalization is a system that gives direct control over the frequency bands of your music or the sound coming from your source.

Audio bands usually have a count of one or a maximum of 30 numbers. If in the case, there is a higher frequency range than allowed, it requires you to have a lot of operations to adjust accordingly.

Real – Time Analyzer

Real – Time Anylazer is usually integrated on DSP audio processors. Each row’s DSP will be equipped with a chip capable of real-time analysis of the audio signal and spectrum .

If processing the signal from an audio source, users will see the level change when they use Real – Time Analyzer or when changing the Equalization parameter.

Bluetooth

With a sound system that is compatible with Bluetooth is extremely important. When you install the manufacturer’s app, you can connect to your device completely wirelessly. You can also control the DSP with EQ directly through your phone or other smart device you want.

Signal channel

For each DSP, there will usually be 4 channels compatible with 4 loudspeakers, or there is an additional channel for the subwoofer. With more advanced DSPs, there will be 6, 8, 10, 12 channels, from which you can choose the right DSP for your vehicle.

Application of DSP technology for advertising activities

What is DSP in advertising?

In advertising, DSP stands for Demand Side Platform, roughly translated as buy-side platform. This is one of the new technology platforms, giving advertisers or advertising agencies the ability to buy and use ads in an automated, auction way .

With the way of advertising through DSP technology, it will help advertisers to bid and display ads in accordance with the target requirements at a reasonable and lowest cost.

The benefits of using DSP for advertising

Firstly , DSP has the ability to help you reach out to a wide range and audience of users, allowing you to own more advertising contracts than marketing people, you can use DSP instead of deploying them individually. Ad Network, DSP will support you to deploy multiple campaigns at the same time for wider advertising effectiveness.

Next , DSP will balance between Publisher and Advertiser, to ensure the advertising process has the most reasonable price, saving business costs.

Finally , DSP is the beginning of traditional forms of advertising. When the DSP wasn’t around, the staff had to do manual advertising. But now, DSP has formed, helping to cut out the complicated stages, can reach Publisher quickly, save the most optimal cost.

Thanks to the automation capabilities of DSP, help businesses have many successful ad auctions.

The working mechanism of DSP

• Advertisers will first create a campaign with information such as campaign name, target customer group, maximum bid price, etc.
• Then submit the campaign to DSP for approval.
• DSP will automatically analyze the demand in the strategy to send to Advertiser, DSP also predicts whether Advertiser won the bidding opportunity or not and makes a request to buy advertising.
• To increase the chances of winning in auctions, DSP will send to Ad Exchange a list of Advertisers who are eligible to participate in the bidding.

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The above article has provided you with some information about what is a DSP signal processor, the application of a DSP digital audio signal processor. Hope this article helps you!