[introduction] in working environment, the kind of computer of people use notebook produces the change that expect is less than ceaselessly. Epidemic situation makes long-range office already became a kind of normalization. And this one trend drove the mixture office environment in all sorts of long-range positions to be mixed to portable sex much better the taller preference that frequency experiences. According to IDC PCD Tracker Historical 2022 year the 3rd quarter reports (the graph is shown 1 times) , the industry is using ultrathin notebook computer quickly.

Author: Nick Skinner of chief of market of product of Cirrus Logic PC

The importance of notebook computer frequency grows day and day

In working environment, the kind of computer of people use notebook produces the change that expect is less than ceaselessly. Epidemic situation makes long-range office already became a kind of normalization. And this one trend drove the mixture office environment in all sorts of long-range positions to be mixed to portable sex much better the taller preference that frequency experiences. According to IDC PCD Tracker Historical 2022 year the 3rd quarter reports (the graph is shown 1 times) , the industry is using ultrathin notebook computer quickly.

Graph 1: According to the data of IDC, more and more users choose ultrathin notebook computer, because the ply of these equipment is close to the ply of the mobile phone.

The appearance that lets a notebook computer is more and more frivolous, some are close to 10-15 millimeter even (as identical as mobile phone ply) , retroflexion as 360 degrees at the same time, dismountable 2 syncretic and wait for appearance of new-style notebook computer to book size appear, acoustics challenge also becomes more and more complex.

For example, what handle official bussiness remotely is popular with each passing day the importance of the frequency in raising conference of notebook computer telephone (graph 2) , be such more in noisy environment especially. These metabolic need of office environment are carried easily and the notebook computer that has outstanding frequency experience, do not suffer earphone and exterior loudhailer be restricted. Experience of good notebook computer frequency means an user can working anyplace — although that place may have noisy background noise, for example the noise of the child, cafe, mower, building or airport.

Accordingly, as computer of much loudhailer notebook thinner and thinner, ply falls from 20 millimeter to 10 millimeter, intelligent meritorious service puts the core that makes the intelligent design that drive and settles these Audio Engineering challenges.

Graph 2: The frequency quality that video communicates and consistency are attached most importance to especially to becoming long-range office staff should.

The difficulty of frequency of notebook computer loudhailer with excellent design is heavy

Current ultrathin notebook computer gets use below various means and condition, but the high quality frequency that needs constant. This means the loudhailer in these ultrathin notebook computer must smaller thinner. However, physical limitation makes obtain canorous sound and enough low frequency very hard from inside these miniature loudhailer. Below all and different use situation, frequency also should be consistent. The position of constant change and the environment that change ceaselessly may the frequency consistency of computer of great influence notebook. For example, the user can choose to be below flat computer mode, tent mode or notebook computer mode listen to 2 syncretic equipment, if pursue,4 are shown. In addition, small cell n can limit the volume of frequency. Those who affect consistency of notebook computer acoustic quality is other use a volume level that includes to differ and frequency content type, for example speech, film, music and game. Finally, frequency quality should be met keep as the elapse of time stable, and won’t appear apparent loudhailer function degrades or breakdown. These applied setting have each times medium those who differ is acoustics with electric challenge.

Graph 3: Cirrus Logic support undertakes to every kinds of mode phonic effect thin tone gets used to distinct acoustics effect, ensure for jotter computer, flat computer and tent mode apply setting to offer the loudness of constant and high quality frequency.

Make OEM put intelligent meritorious service to the demand of frequency of high grade loudhailer as first selection technology. Optimal frequency performance is drawn in the acoustics design that intelligent meritorious service puts a technology to provide a challenge extremely from notebook computer. Output signal to obtain the frequency of high quality, the design of notebook computer must be had full bass, low the sound of lack fidelity, balance and finite cacophony and vibration. Intelligent meritorious service puts collect soft hardware to be an organic whole, but utmost land increases loudness, quality and consistency, at the same time utmost ground reduces noise and protective loudhailer escapes damage bad.

However, go to loudhailer drive the largest volume is a delicate balance. If drive is gotten too over- , loudhailer will be lack fidelity suffer permanent damage even. Increase volume to also can bring about loudhailer, clavier, housing or other component to give out murmur. The user regards this kind of cacophony as lack fidelity, what and can feel do not want is oscillatory. At worst, manufacturer prevents to give out murmur through moving low volume, but the good, loudness that this meeting damages frequency, quality and consistency, the influence sees a movie or play the integral experience of game thereby.

 

The biggest challenge depends on letting computer of an ultrathin notebook can maintain good acoustic quality below different utility and condition. To different content type (for example speech, music and game) and fall in different volume and batteries n, frequency signal must sound consistent. As the elapse of time, the frequency quality of these equipment should keep consistent, degrade without apparent loudhailer function or breakdown.

DSP intelligence meritorious service is put solve volume problem

Intelligent meritorious service is put (graph 4) through will result put with compositive digital signal processor (DSP) photograph union will settle these challenges, this intelligence meritorious service is put run the intelligent algorithm that contains loudhailer physics model, raise loudhailer function and consistency with utmost ground. This processor and photograph of hardware of loudhailer condition induction are united in wedlock, can let result put more effectively drives loudhailer, at the same time protective loudhailer escapes damage bad.

Put photograph comparing with basic skill, intelligent meritorious service is put can achieve 2 times or more sound pressure level (SPL) . In addition, OEM is passing the type of new-style and most advanced loudhailer that aims to extract better frequency to overcome loudness to restrict, include big amplitude and force to eliminate loudhailer. The intelligent work that these new-style loudhailer need to have high drive strength puts ability to realize optimum behavior.

Graph 4: The intelligent work that high quality frequency needs to have high drive strength is put, in order to achieve the largest frequency volume and performance.

Keep high quality

Everybody is different to the definition of acoustic quality. But as a whole, the problem that cares generally includes loudness, low the response of lack fidelity, balance, diaphaneity and fewer cacophony. Intelligent meritorious service is put conduce to go to miniature loudhailer drive the limit of bass section, and be below a lot of circumstances, limits of OK and patulous frequency in order to obtain heavier bass. Should do not have onefold frequency limits (be like bass, medium sound or high) when taking dominant place, may appear balance or ” evenness ” answer. Pass a worthwhile law to carry out this strategy to be able to produce more euphonic sound.

Low lack fidelity conduce to promotion definition and can understand degree, communicate to speech especially and talk is more such. Enhance algorithm to eliminate any wave crest that do not need or trough to help the response of balance loudhailer thereby through measuring the frequency of loudhailer to answer.

If the graph is shown 5 times, murmur is a trends and thorny frequency issue. The certain and specific content such as ring and voice may cause noise, and other content (like popular music) the likelihood won’t spark murmur. When loudhailer is oscillatory, it can cause chain reaction, other part of the system (like clavier or housing) can give out murmur. The vibration that does not need is a kind of bad experience, the user regards murmur as possibly even frequency lack fidelity, this meeting is damaged definition and can understand degree.

 

Graph 5: The noise that Cirrus Logic algorithm can reduce ultrathin notebook computer and utmost ground reduces vibration, ensure at the same time resonant, high grade frequency.

Have Pianshangxin the meritorious service of Cirrus Logic intelligence of date processing function is put can realize higher quality through enhancing algorithm. Dynamic bass is patulous and algorithmic can mix the bass loudness of any volume level deepness implementation is the biggest change. Fast diapason and the acoustic quality that get used to a function to be able to optimize configuration of every kinds of different product, for example mode of tent or flat computer, notebook computer. Finally, batteries manages algorithmic meeting to adjust diapason parameter when batteries voltage drops, increase volume with utmost ground and decrease lack fidelity.

Intelligent meritorious service is put drive notebook computer frequency to move toward future

As these 10 years the demand to mobile sex and long-range office grows day and day, notebook computer frequency already made the one part that we live and works. Narrow the dimension of notebook computer considerably to ultrathin, light with agile product configuration, make the frequency challenge in using an environment remotely with shift becomes more complex. The newest, notebook computer that has innovation sex most uses intelligent meritorious service to put sufficient play to design an advantage, bring the phonic effect experience of the shock for consumer. Although current shift uses an environmental demand severe exacting, but the intelligent meritorious service that uses advanced algorithm is put can offer outstanding frequency quality through many loudhailer, bring the frequency of be personally on the scene to experience for the film, music, game and speech.

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