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Noise Reduction is the new standard in Diving Intercom
The future standard in diving communications is the HYDROLINX line of intercoms that reliably mute inhalation noise and reduce
background noise while producing clear, intelligible speech from divers in any gas mixture. Effective noise reduction is critical for
truly clear and intelligible speech form diving intercoms and HYDROLINX has developed the best performing intercoms available
today. Although HYDROLINX Intercoms use Digital Signal Processing technology to provide functions for advanced users, they
are as easy to operate as basic analog diving radios.
Inhalation Noise Reduction (INR)
HYDROLINX intercoms detect and mute inhalation noise without affecting the diver’s speech. An LED for each diver indicates when
inhalation noise is being muted. The tender optimizes inhalation noise detection by setting the INR control for best performance.
The INR function is critical for superior performance in diving intercoms. This function addresses three issues:
Background Noise Reduction (BNR)
The intercom analyzes and reduces background noise from exhalation bubbles, gas flow, chamber fans, etc. The tender adjusts
the reduction level for the best speech quality. Each diver’s microphone signal is filtered independently.
Helium Speech Unscrambler (HSU)
The optional helium speech unscrambler function corrects the effect of Helium gas on diver speech. The tender selects a MODE
and adjusts the DEPTH for the most intelligible speech. The HSU function works for any depth from surface to 600 meters.
Seven modes optimize performance over the widest possible range of depth, gas mixture, pressure, microphone type, and
language. HYDROLINX HSU intercoms are the only ones capable of setting each diver for a different depth or for air use.
Audio Line-Level Input and Output ports
These ports expand the capabilities of HYDROLINX intercoms by permitting:
Portable and Rack Mount Configurations
HYDROLINX intercoms come in both portable and rack mount configurations. Portable units are designed for on-deck use.
They have water tight cases.
Rack mount intercoms have additional capabilities that let them handle multiple diver environments. To support advanced
users with more flexibility, each diver may have different INR, BNR and HSU settings, including enabling or disabling these
functions. Rack mount intercoms also permit chamber divers to initiate calls to the tender.
Noise Reduction Technology
Raw diver speech is never clear to the tender, as it is mixed with inhalation noise, gas flow noise and bubble noise. Over the
years, large companies around the world have studied this problem. But, although their research provided insightful information,
their noise reduction capabilities never developed sufficiently. This is because diver speech, inhalation noise and background
noise change with many factors including depth, helmet, regulator valve, air or helium gas mixture, etc.
HYDROLINX achieved truly clear diver communications by analyzing each factor’s effect on speech clarity and intelligibility and
then devising solutions for each factor. The speech characteristics of different divers were also taken into account.
HYDROLINX then designed complex proprietary algorithms that analyze and characterize microphone signals in any mixture
of air and Helium, distinguishing speech from background noise and inhalation noise. To these were added algorithms that
implement INR, BNR and HSU (seven algorithms) filtering. These are applied individually to each diver’s microphone signal for
the highest speech intelligibility and clarity available today.
HYDROLINX offers a wide range of intercom products for both diving and compression chambers use.
The future standard in diving communications is the HYDROLINX line of intercoms that reliably mute inhalation noise and reduce
background noise while producing clear, intelligible speech from divers in any gas mixture. Effective noise reduction is critical for
truly clear and intelligible speech form diving intercoms and HYDROLINX has developed the best performing intercoms available
today. Although HYDROLINX Intercoms use Digital Signal Processing technology to provide functions for advanced users, they
are as easy to operate as basic analog diving radios.
Inhalation Noise Reduction (INR)
HYDROLINX intercoms detect and mute inhalation noise without affecting the diver’s speech. An LED for each diver indicates when
inhalation noise is being muted. The tender optimizes inhalation noise detection by setting the INR control for best performance.
The INR function is critical for superior performance in diving intercoms. This function addresses three issues:
- It increases diver speech intelligibility and clarity. Removing the loud inhalation noise from diver microphones clarifies the
- It permits any diver may speak while others are inhaling. This enables the tender to hear each diver’s speech clearly when
- It provides an LED for each diver that indicates when inhalation noise is being detected. Therefore, the tender knows when
Background Noise Reduction (BNR)
The intercom analyzes and reduces background noise from exhalation bubbles, gas flow, chamber fans, etc. The tender adjusts
the reduction level for the best speech quality. Each diver’s microphone signal is filtered independently.
Helium Speech Unscrambler (HSU)
The optional helium speech unscrambler function corrects the effect of Helium gas on diver speech. The tender selects a MODE
and adjusts the DEPTH for the most intelligible speech. The HSU function works for any depth from surface to 600 meters.
Seven modes optimize performance over the widest possible range of depth, gas mixture, pressure, microphone type, and
language. HYDROLINX HSU intercoms are the only ones capable of setting each diver for a different depth or for air use.
Audio Line-Level Input and Output ports
These ports expand the capabilities of HYDROLINX intercoms by permitting:
- The connection of two intercoms for more divers
- Wireless tender operation
- Audio recording
- Telephone communication
- Audio playback
Portable and Rack Mount Configurations
HYDROLINX intercoms come in both portable and rack mount configurations. Portable units are designed for on-deck use.
They have water tight cases.
Rack mount intercoms have additional capabilities that let them handle multiple diver environments. To support advanced
users with more flexibility, each diver may have different INR, BNR and HSU settings, including enabling or disabling these
functions. Rack mount intercoms also permit chamber divers to initiate calls to the tender.
Noise Reduction Technology
Raw diver speech is never clear to the tender, as it is mixed with inhalation noise, gas flow noise and bubble noise. Over the
years, large companies around the world have studied this problem. But, although their research provided insightful information,
their noise reduction capabilities never developed sufficiently. This is because diver speech, inhalation noise and background
noise change with many factors including depth, helmet, regulator valve, air or helium gas mixture, etc.
HYDROLINX achieved truly clear diver communications by analyzing each factor’s effect on speech clarity and intelligibility and
then devising solutions for each factor. The speech characteristics of different divers were also taken into account.
HYDROLINX then designed complex proprietary algorithms that analyze and characterize microphone signals in any mixture
of air and Helium, distinguishing speech from background noise and inhalation noise. To these were added algorithms that
implement INR, BNR and HSU (seven algorithms) filtering. These are applied individually to each diver’s microphone signal for
the highest speech intelligibility and clarity available today.
HYDROLINX offers a wide range of intercom products for both diving and compression chambers use.
HYDROLINX Intercoms
Warranty
HYDROLINX Diving Communication, Inc. provides a Two Year Limited Warranty on all products. All products are warranted
against defects in materials and workmanship. This warranty is conditional on our determination that the product has not been
abused, misused. Corrosion on front panel components is part of natural deterioration and is not covered under this warranty.
Warranty repair services must be performed by HYDROLINX or an authorized HYDROLINX repair shop. Only HYDROLINX
components are approved for on-site repairs. Use of substitutes will invalidate this warranty.
HYDROLINX should be contacted directly, before returning a product for repair service, in or out of warranty. The RMA number
issued by HYDROLINX must appear legibly on the package. The customer should include complete contact information in the
package and a statement of the problem. Units returned for warranty service should be safely packaged and insured.
HYDROLINX will not be responsible for damage in shipment. Freight charges to HYDROLINX are the customer’s responsibility.
against defects in materials and workmanship. This warranty is conditional on our determination that the product has not been
abused, misused. Corrosion on front panel components is part of natural deterioration and is not covered under this warranty.
Warranty repair services must be performed by HYDROLINX or an authorized HYDROLINX repair shop. Only HYDROLINX
components are approved for on-site repairs. Use of substitutes will invalidate this warranty.
HYDROLINX should be contacted directly, before returning a product for repair service, in or out of warranty. The RMA number
issued by HYDROLINX must appear legibly on the package. The customer should include complete contact information in the
package and a statement of the problem. Units returned for warranty service should be safely packaged and insured.
HYDROLINX will not be responsible for damage in shipment. Freight charges to HYDROLINX are the customer’s responsibility.
Purchase through HYDROLINX resellers
Customers purchase HYDROLINX products through HYDROLINX resellers (dealers or distributors), Reseller policies apply.
HYDROLINX products are built to high quality standards and are designed to meet all reasonable safety and reliability
standards; also HYDROLINX offers a Two Year Warranty on any part or labor. HYDROLINX Diving Communication, Inc. is not
liable for any consequential (direct or indirect) damages to any customer or user of the product, as we cannot control the
manner in which our products are used. Neither HYDROLINX Diving Communication Inc., nor any HYDROLINX authorized
representative shall, in any event, be liable for losses, including but not limited to monetary, business interruption, profit, or
any material and emotional losses, which may arise from the use of HYDROLINX products, regardless of notification given to
HYDROLINX or any HYDROLINX authorized representative.
standards; also HYDROLINX offers a Two Year Warranty on any part or labor. HYDROLINX Diving Communication, Inc. is not
liable for any consequential (direct or indirect) damages to any customer or user of the product, as we cannot control the
manner in which our products are used. Neither HYDROLINX Diving Communication Inc., nor any HYDROLINX authorized
representative shall, in any event, be liable for losses, including but not limited to monetary, business interruption, profit, or
any material and emotional losses, which may arise from the use of HYDROLINX products, regardless of notification given to
HYDROLINX or any HYDROLINX authorized representative.
Limitation of Liability
Trademarks
At HYDROLINX Diving Communication, Inc., our legal name, trade names, brands, trademarks and service marks represent
and convey our good name and the goodwill of our company. HYDROLINX Intellectual Property, including logos, trademarks,
trade names, and product images may be used only by HYDROLINX authorized resellers and solely for the sale and
distribution of HYDROLINX products.
and convey our good name and the goodwill of our company. HYDROLINX Intellectual Property, including logos, trademarks,
trade names, and product images may be used only by HYDROLINX authorized resellers and solely for the sale and
distribution of HYDROLINX products.
| Hydrolinx Diving Communication, Inc. 5933 Sea Lion Place, Stuite 108, Carlsbad, CA 92008-6583, USA Phone: 760-603-9199 Fax: 760-603-9193 sales@hydrolinx.com |