World First SMD Microphone

SiSonic Surface Mount Microphones

The SiSonic microphone represents a low-cost, high-performance alternative to traditional ECMs. Unlike traditional ECMs that often require customers to use off-line, manual assembly to apply them, SiSonic is supplied on tape-and-reel and can be run through standard automatic pick-n-place equipment, just like traditional surface mount equipment. Manufactured from poly-silicon, this revolutionary microphone takes advantage of semi-conductor manufacturing processes that result in a robust microphone that yields a high degree of repeatability, stable acoustic performance, and flexibility for future design enhancements. They meet industry and customer requirements for heat, shock, vibration and longevity, and at the same time help lower customers?overall microphone installation costs.

Advantages - SiSonic for Innovation and Automation

SiSonic microphones are unique because they represent the technology that you can use both today and in the future. The current package provides equivalent (or better) acoustic performance, can easily be adopted in new designs and next platform development, at the same providing immediate cost savings in manufacturing. The flexible package design will allow this microphone to meet the future customer demands, such as smaller package sizes without degrading performance, or the embedding of additional components such as an integrated amplifier.

MEMS Die Packaging Silicon structure for high degree of manufacturing repeatability and stable (predictable) acoustic performance. Patented 밼ree-floating?diaphragm is immune to stress variations that impact acoustic performance.

• Low mass, low size diaphragm produces excellent vibration sensitivity performance.
• Excellent RF and EMI suppression
• Excellent operating and storage temperature ratings ?0ºC to 100ºC
• Versatile configuration and sound porting options for future microphone enhancements.

Surface Mountable Microphone Package 45% less board space than 6x2.2 ECMs 30% lower profile height than ECMs (SiSonic only requires gasket on the top side compared to ECM requring gasket on both top and bottom)

• 100% lead-free, and compatible with lead-free solder profile (260C, 30 seconds)
  
• Highly shock resistant, up to 10,000 Gs compared to ECMs (3,000 Gs)

High speed Automated Assembly Pick-and-place via standard automated equipment Tape-and-reel assembly (available in 7?and 13?

• High volume, low cost solution means increased throughput with low rework
  
• No off-line soldering, no manual insertion, and no off-line testing

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Applications - Small Footprints ?Revolutionary Strides

SiSonic microphones are ideally suited for high volume applications that can take advantage of the low costs associated with automatic pick-n-place surface mounting, such as Cell Phones and PDA. SiSonic is an excellent replacement to traditional ECMs. It offers similar or better acoustic performance to satisfy acoustic engineers. For manufacturing, SiSonic is applied using standard pick-n-place automated equipment

and is surface mountable, a much better solution for mechanical design and production engineers. And, it provides an overall assembly cost savings, a benefit for commodity and purchasing managers.

• Surface mount design is ideal for high volume applications such as cell phones, laptops, PDA and electronic products.
• Robust design provides for stable acoustic performance under extreme conditions such as temperature, shock and vibration.
• Small profile is ideal in space-constrained applications.
• Operates in temperatures up to 100ºC
• Flexible package design allows for future product enhancements and integration
  of additional components.

Other Microphones

High Performance Microphones Knowles manufactures a broad product line of sub-miniature microphones.Our electret condenser microphones comprise several form factors, andhundreds of individual models. Knowles microphones are used in diverse applications including communications, pro audio, medical, and sensing.There is an unmatched variety in Size, Shape, and Performance.

Magnetic Microphones
Knowles' Magnetic Microphones (BJ Series) are based on balanced armature technology and are self-shielded against external magnetic fields. The microphones offer high efficiency, stability, reliability, and are small in size. The diaphragm of the BJ Series responds to pressure differential giving high rejection of background noise. Both face and edge ports are offered. In addition, there is a short distance between front and back ports resulting in improved noise rejection up to higher frequencies.

Waterproof Microphones
Knowles' waterproof microphones - the MR Series and WP Series survive immersion in water. The MR Series consists of a microphone element attached to a waterproof bellows assembly. They may be panel mounted, and are suitable for outdoor use or repeated submersion. The WP Series¿ form factor is a very small size with low vibration sensitivity. Some models have an excellent noise canceling performance, which is useful for sensors and instrumentation.

Boom Microphones
Knowles' Boom Microphones are available in both flexible and rigid styles which utilize either the WP or NR microphone element, giving superb noise rejection and high-frequency crossover of near and far field responses. The boom microphones are utilized in a variety of aircraft audio systems and radio communication helmets. Knowles offers customized lengths and end terminations to meet your application needs.

Piezo Ceramic Microphones
Knowles' Piezo Ceramic Microphones (BL Series) are rugged, stable, and versatile. BL microphones are available in three different package sizes: standard, thin, or ½ inch cylindrical shell and cable assembly. Both communication and broadband frequency response versions are offered. In addition, BL microphones have high vibration sensitivity, and may be used as accelerometers.

Speakers

	Balanced Armature Amplified Speakers Knowles balanced armature amplified speakers are sub-miniature speakers with a Class D amplifier. Developed for the hearing aid industry, Knowles speakers are utilized in a variety of premium communications and audio products. The speakers may be fit to an earmold or attached to an earpiece via tubing. Application assistance is available to help you choose the ideal product for your needs from the industry's widest selection.
	Balanced Armature Speakers Knowles balanced armature speakers are sub-miniature speakers. Developed for the hearing aid industry, Knowles speakers are utilized in a variety of premium communications and audio products. The speakers may be fit to an earmold or attached to an earpiece via tubing. Application assistance is available to help you choose the ideal product for your needs from the industry's widest selection.
	Waterproof Speakers The MR Series Assemblies consists of a speaker element attached to a waterproof bellows assembly. They may be panel mounted, and are suitable for outdoor use or repeated submersion.

IntelliSonic Advancing the Science of Sound

Now you can break the micro sound barrier.
The new IntelliSonic™ acoustic technology enhances the reception of today's most advanced miniature and subminiature microphones, bringing unprecedented audio performance to your hands-free product ideas.

Technology Benefits - How it Works

IntelliSonic™ Acoustic Technology
Enhances microphone performance three ways...

a) Array Processing

Creates an angles of acceptance and removes all sound outside the angle.

b) Noise Suppression

Remove white noise, background and ambient noise in the angle of acceptance.

c) Acoustic Echo Cancellation

Removes echo caused by microphone pick up of a speaker audio output.

Now there is no barrier to your voice-integrated product designs.
IntelliSonic technology brings superior audio clarity to the latest hands-free communication products and applications. When evaluating the different sound conditioning solutions available today, you need to understand the different components and their technical prowess. The Knowles patented array processing, noise suppression and AEC are quite unique.

When more than one microphone is aligned in an array, Knowles' patented algorithm predicates itself upon a time-delay principle to configure an array processor with a predetermined Look Angle and Angle of Acceptance onto the speech source. All acoustic plane waves outside the angle of acceptance are attenuated by greater than 15 dB for a two-element array. Knowles' algorithm can attenuate by greater than 20 dB for a 4-element array.

Within the angle of acceptance the algorithm has controllable adaptive noise filters. Depending upon the anticipated environment, the intended feature (telephony or voice recognition), and the discriminating, subjective nature of the human ear, the parameters of the noise suppression are determined specifically for each application.

In the end, Knowles' IntelliSonic(tm) technology allows a device to attain the SNR levels needed for high-level VR accuracy and clear, concise speech over the bandwidth of telephony or VoIP applications. In short, it allows hands-free usage of the voice applications. It eliminates the need for an ear bud or headset. It is intuitive and natural. It enables multimedia-messaging services and the future voice applications.

Simpler, more affordable audio.
If your product is Windows® based, IntelliSonic software can be loaded. Knowles also provides a complete embedded solution for DSP platforms.

Complete Solution - Integrated Systems

When you consider the interdependency of microphone design, acoustic porting, and sound signal conditioning, it's easy to see why Knowles Acoustics has taken an integrated approach to your acoustic system needs.

Microphones
Our extensive line of microphones includes our micro-sized SiSonic silicon microphone the world's smallest -- and our popular Electret Condenser Microphones (ECM), available in your choice of uni-directional, omni-directional, and noise canceling designs. Microphone options include diverse connection methods, waterproofing, RF suppression and more.

Acoustic Porting
Acoustic porting is the seamless conduction of sound into a microphone for the lowest possible sound loss. Knowles Acoustics designs and manufactures acoustic porting solutions for every microphone we offer. These designs represent our ongoing research into the latest materials for sound sealing and conducting.

IntelliSonic Software
The capture and output of perfect sound is all the more achievable when sound is processed by our IntelliSonic software to eliminate unwanted sound, while enhancing desired sound. The software achieves this through array processing, the suppression of stationary and non-stationary noise, and echo cancellation.

Product Applications

IntelliSonic technology is ideal for mobile phones, PDAs/smart phones, PCs, notebook computers/tablets, video cameras, voice recognition systems and specialty applications (voice-based biometrics, gaming, drive through systems, interactive kiosks, etc.). The software can be installed directly to your application, if your product is Windows® XP based. Knowles can also provide embedded solutions allowing the complete algorithm or subsets to be ported to embedded RTOS'es and DSPs. Please contact us for more information.

Configuration Options - Full Spectrum of Solutions

IntelliSonic technology can be installed as software only, or be applied to a single microphone as well as two and four element microphone arrays. The software's "far field" a noise-canceling capacity is ideal for mobile communication and voice recognition applications.

IntelliSonic software is available in the following series options...

Supported Platforms
Software: Windows® XP
DSP Embedded Solutions: Please contact us for more information

Single Microphone Solution
Key Technologies: Noise Suppression with or without acoustic echo cancellation
Microphone Type: Omni or Uni

Two and Four Microphone Solution
Key Technologies: Array signal processing, noise suppression with or without acoustic
echo cancellation
Microphone Type: Uni

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