SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the Month of ~~December~~April ~~2005~~ 2006

SPECTRUM SIGNAL PROCESSING INC.

(Translation of the Registrant’s Name Into English)

Suite 300, 2700 Production Way, Burnaby, British Columbia, V5A 4X1 Canada (Address of Principal Corporate Offices)

(Address of Principal Corporate Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.


Form 20-F þ		Form 40-F o

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.


Yes o		No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

Attached to the Registrant’s Form 6-K for the month of ~~December~~April ~~2005~~2006, and incorporated by reference herein, are the following press releases made by the Registrant:

1.		Press Release dated December 8, 2005
2.		Press Release dated December 29, 2005

1. Press Release dated April 4, 2006

2. Press Release dated April 20, 2006

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SPECTRUM SIGNAL PROCESSING INC.
	By:	/s/ Brent Flichel
		Name:	Brent Flichel
Dated: January 4, 2006		Title:	Vice President Finance and CFO


SPECTRUM SIGNAL PROCESSING INC.
By:	/s/ Brent Flichel
	Name:	Brent Flichel
	Title:	Vice President Finance and CFO

Dated: April 28, 2006

F O R . I M M E D I A T E . R E L E A S E

Spectrum ~~Signal~~Introduces ~~Processing~~Industry’s ~~SDR-3000~~Most ~~Solutions~~Powerful ~~Selected~~and ~~for~~Lowest USPriced flexComm ~~Military~~Waveform ~~Communications Development~~Design ~~Programs~~Studio

~~Burnaby,~~Platform ~~B.C.,~~offers ~~Canada~~turnkey —solution ~~December 8~~with hardware, ~~2005~~software —and ~~Spectrum~~all ~~Signal~~the ~~Processing~~industrial ~~Inc.,~~strength ~~today announced that~~development ~~it’s~~tools ~~flexComm™~~necessary ~~SDR-3000 product family has been selected~~ for ~~two~~advanced ~~different~~waveform ~~military communications~~design ~~programs by a leading US defense contractor.~~

InBurnaby, ~~the first program~~B.C., ~~Spectrum’s~~Canada ~~flexComm~~— ~~PRO-3500~~April 4, ~~basedband~~2006 ~~processing~~— ~~engine~~Spectrum ~~will~~Signal beProcessing ~~used~~Inc. ~~for~~today announced the ~~development~~flexCommä ofWaveform Design Studio™, a ~~Software~~fully ~~Communications~~integrated ~~Architecture~~commercial-off-the-shelf ~~(SCA) compliant~~platform for waveform designers. ~~This~~The ~~waveform~~flexComm ~~will~~Waveform Design Studio provides the industry’s lowest price “IF to beEthernet” ~~used~~solution ~~for~~with a ~~next~~complete ~~generation~~run-time ~~military~~software ~~satellite~~stack, ~~communications~~a ~~(MILSATCOM) system~~full ~~designed~~suite toof development tools and ~~provide~~all ~~simultaneous~~corresponding ~~voice,~~licenses. ~~data~~This ~~and~~software ~~video~~stack ~~communications~~includes ~~for~~a USSoftware Communications Architecture (SCA) Core Framework and ~~Allied~~Zeligsoft ~~forces~~Software’s ~~anywhere~~powerful inSCA ~~the world~~development tools. ~~This~~The ~~SCA~~stack ~~compliant~~also includes ~~waveform~~Microsoft® ~~will~~Windows® beXP, ~~able~~a toCORBA ~~operate~~object onrequest ~~Joint~~broker ~~Tactical~~and ~~Radio~~Spectrum’s ~~System~~quicComm™ ~~devices~~software development kit and SCA board support package.

~~Under~~“The flexComm Waveform Design Studio is a low price productivity tool to accelerate development by equipping each designer on the ~~second~~project ~~program~~team with their own personal black-side environment,” said Mark Briggs, Spectrum’s ~~has~~Vice ~~delivered~~President ~~its~~of Marketing. “The flexComm ~~SDR-3000~~Waveform ~~SMRDP~~Design Studio simplifies the supply chain by integrating all the necessary waveform design elements into one box. This turnkey solution includes hardware, ansoftware, ~~integrated~~software ~~“RF~~licenses, todevelopment tools, system ~~Ethernet~~examples and source code for a sample application so work can begin immediately.” ~~subsystem~~He adds, to“This single bereconfigurable ~~used~~software asdefined ~~part~~radio platform supports the development of aboth ~~broader~~narrowband and ~~communications~~wideband ~~system~~waveforms ~~under~~and ais ~~classified~~ideal for individual waveform developers who must later port their ~~program~~waveforms to deployable platforms, such as Spectrum’s SDR-3000 and SDR-4000.”

~~“We~~The ~~continue~~flexComm toWaveform ~~get~~Design ~~designed~~Studio ~~into~~system ~~advanced~~is ~~communications~~based ~~systems~~upon bySpectrum’s ~~leading~~flexComm ~~defense~~family ~~contractors.~~of processing ~~These~~and ~~customers~~analog-to-digital/digital-to-analog ~~require~~converter ~~our~~modules. ~~industry~~The ~~leading~~system ~~software~~incorporates ~~defined~~a ~~radio~~single ~~solutions~~Xilinx® Virtex-4™ ~~including~~field ~~the associated~~programmable ~~software~~gate ~~stacks;~~array ~~notably~~and ~~the~~multiple ~~SCA~~Texas ~~and~~Instruments’ ~~quicComm~~TMS320C6416™, ~~our~~digital ~~proprietary~~signal processing ~~hardware~~devices ~~abstraction layer,”~~all ~~said~~interconnected ~~Pascal~~through ~~Spothelfer,~~high ~~Spectrum’s~~performance ~~President~~communications ~~and~~fabrics ~~CEO~~integrated into an Intel® Xeon™ workstation. ~~“Our~~The ~~modular~~flexComm ~~solutions~~Waveform ~~are~~Design ~~suitable for~~Studio asupports ~~wide~~two ~~spectrum~~receive ofand ~~communications~~two transmit ~~systems~~channels ~~ranging~~at ~~from~~industry ~~larger~~standard 10.7, ~~high~~21.4 ~~bandwidth~~and ~~MILSATCOM~~70 ~~systems to~~MHz ~~small~~IF ~~rugged~~with ~~devices,~~bandwidths ~~which~~in weexcess ~~are~~of ~~now~~30 MHz. ~~able~~It also supports “RF to ~~capture~~Ethernet” ~~with~~for ~~our~~HF ~~newly~~and ~~launched~~VHF ~~SDR-4000~~frequency ~~product series~~bands.”

~~Spectrum~~The system includes all software application libraries, an operating system and Harris Corporation’s ~~flexComm~~SCA ~~PRO-3500~~Core isFramework along with Zeligsoft development tools providing a ~~CompactPCI®-based~~complete ~~Freescale™~~SCA development G4environment ~~PowerPC®~~with ~~processing~~code ~~engine~~generation capability. The flexComm Waveform Design Studio also ~~designed~~includes tosource ~~work~~code asfor ~~the~~a ~~base-band~~sample ~~processing~~application ~~engine~~illustrating ina complete transmit and receive data flow from the ~~company’s~~RF/IF ~~SDR-3000~~digital ~~series~~up ofand ~~software defined~~down ~~radio~~conversion ~~platforms~~through Ethernet.

The ~~modified~~flexComm ~~SDR-3000~~Waveform ~~SMRDP~~Design ~~provides~~Studio ais ~~turnkey~~available ~~black-side~~now ~~“RF to Ethernet” processing system~~ and ~~includes~~ ~~sample~~priced ~~application~~at ~~software~~$62,900 ~~supporting frequency agile operation. The systems are comprised of Spectrum’s SDR processing and high-speed transceiver boards (PRO-3500 and XMC-3311)~~ in a ~~single-slot~~North 2UAmerica ~~CompactPCI chassis. These components are integrated with the Digital Receiver Technology, Inc. DRT2110 RF transceiver subsystem consisting of a tuner, an exciter~~ and a ~~single-board computer~~$69,900 ~~in a 20-slot 3U CompactPCI chassis~~internationally. ~~The~~Additional ~~system~~product ~~also~~information ~~includes~~can ~~all~~be ~~software application~~found ~~libraries, including digital down-conversion and digital up-conversion field~~at ~~programmable gate array cores, operating systems and a SCA Core Framework~~http://www. ~~A comprehensive data flow example is provided as a starting point for customers’ design efforts~~spectrumsignal.com/products.

For more information on Spectrum’s product line visit our website at http://www.spectrumsignal.com/products.

ABOUT SPECTRUM SIGNAL PROCESSING INC.

Spectrum Signal Processing Inc. (NASDAQ: SSPI / TSX: SSY) is a leading supplier of software defined platforms for defense electronics applications. Spectrum’s products and services are optimized for military communications, signals intelligence, surveillance, electronic warfare and satellite communications applications. Spectrum’s integrated, application-ready products provide its customers with compelling time-to-market and performance advantages while mitigating program risk and cost parameters. Spectrum Signal Processing (USA) Inc., based in Columbia, MD, provides ~~application~~applications engineering services and modified commercial-off-the-shelf platforms to the US Government, its allies and its prime contractors. For more information on Spectrum and its flexComm product line, please visit www.spectrumsignal.com.

FORWARD-LOOKING SAFE HARBOUR STATEMENT

This news release contains forward-looking statements related to sales of the Spectrum Signal Processing Inc. flexComm product line. ~~Although Spectrum has received orders for shipping flexComm product, development delays and customer issues could delay shipments.~~ These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties, including the timely development and acceptance of Spectrum’s new products, the impact of competitive products and pricing, ~~availability~~ of components, changing market conditions and the other risks detailed from time to time in other company filings. Actual results may differ materially from those projected. These forward-looking statements represent the company’s judgment as of the date of this release and Spectrum may or may not update these forward-looking statements in the future. Readers are referred to Spectrum’s assumptions and risk factors set out in the most current Form 20-F filed with the Securities and Exchange Commission and the British Columbia Securities Commission.

availability of components, changing market conditions and the other risks detailed from time to time in other company filings. Actual results may differ materially from those projected. These forward-looking statements represent the company’s judgment as of the date of this release and Spectrum may or may not update these forward-looking statements in the future. Readers are referred to Spectrum’s assumptions and risk factors set out in the most current Form 20-F filed with the Securities and Exchange Commission and the British Columbia Securities Commission.

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™ flexComm, quicComm and ~~quicComm~~Waveform Design Studio are trademarks of Spectrum Signal Processing Inc. ®Microsoft ~~CompactPCI~~and isWindows aare registered ~~trademark~~trademarks of ~~the~~Microsoft ~~PCI™~~Corp. ~~Industry~~Xilinx ~~Computers~~is ~~Manufacturer’s~~a ~~Group~~registered trademark ™and ~~PCI~~Virtex-4 is a trademark of ~~the~~Xilinx ~~Peripheral~~Inc. ~~Component~~TMS320C64x ~~Interconnect~~is —a ~~Special~~trademark ~~Interest~~of ~~Group~~Texas ~~(PCI-SIG) ®~~Instruments. ~~PowerPC~~Intel is a registered trademark ofand ~~International~~Xeon ~~Business~~is ~~Machines~~a trademark of Intel Corporation. Other product and company ™names ~~Freescale~~mentioned ismay abe ~~trademark~~trademarks and/or registered trademarks of ~~Freescale~~their ~~Semiconductor,~~respective ~~Inc~~holders.

SPECTRUM CONTACTS

Mark Briggs		Brent Flichel
Technical and Trade Media		Business Media and Investor Relations
Tel: 604.676.6743		Tel: 604.676.6733
Email: mark_briggs@spectrumsignal.com		E-mail: brent_flichel@spectrumsignal.com

F O R . I M M E D I A T E . R E L E A S E

Spectrum Signal Processing Announces Retirement of Peter Roberts as Director

Burnaby, B.C., Canada — December 29, 2005 — Mr. Irving Ebert, Chair of the Board of Directors of Spectrum Signal Processing Inc., today announced the retirement of Mr. Peter W. Roberts from the Company’s Board of Directors, effective December 31, 2005.

“We regret but understand Peter’s decision to retire as a director of the Company. Peter brought with him experience in corporate governance that will be missed,” stated Mr. Ebert. “That said, I respect the fact that Peter’s time commitments to other organizations, including the Institute of Chartered Accountants of British Columbia, will increase significantly in 2006. I wish to thank Peter for his significant contributions in both his role as a Spectrum director and as Chair of our Board’s Audit and Governance Committee.”

“My experience with Spectrum has been rewarding from both a personal and a professional perspective,” stated Mr. Roberts. “I wish the company well in its future endeavors and will assist the Board in finding an appropriate replacement for myself.”

The company has started a search for a new director to chair the Board’s Audit and Governance Committee. David E. Scott will chair the Board’s Audit and Governance Committee on an interim basis. Mr. Scott currently serves on the boards and audit committees of a number of other publicly traded companies.

ABOUT SPECTRUM SIGNAL PROCESSING INC.

Spectrum Signal Processing Inc. (NASDAQ: SSPI / TSX: SSY) is a leading supplier of software defined platforms for defense electronics applications. Spectrum’s products and services are optimized for military communications, signals intelligence, surveillance, electronic warfare and satellite communications applications. Spectrum’s integrated, application-ready products provide its customers with compelling time-to-market and performance advantages while mitigating program risk and cost parameters. Spectrum Signal Processing (USA) Inc., based in Columbia, MD, provides application engineering services and modified commercial-off-the-shelf platforms to the US Government, its allies and its prime contractors. For more information on Spectrum and its flexComm™ product line, please visit www.spectrumsignal.com.

TM flexComm is a trademark of Spectrum Signal Processing Inc.

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SPECTRUM CONTACT

~~Brent~~Mark ~~Flichel~~Briggs ~~Business~~Technical ~~Media~~ and ~~Investor~~Trade ~~Relations~~Media Tel: 604.676.~~6733~~6743 ~~E-mail~~Email: ~~brent_flichel~~mark_briggs@spectrumsignal.com

1MEDIA ADVISORY

Spectrum Signal Processing to Host 2006 First Quarter Conference Call and Live Audio Webcast

Burnaby, B.C., Canada — April 20, 2006 — Spectrum Signal Processing Inc. (NASDAQ: SSPI / TSX: SSY) will release its 2006 first quarter results after market close on Thursday, May 4, 2006. At 1:30 pm Pacific / 4:30 pm Eastern time the same day, Pascal Spothelfer, Spectrum’s President & CEO, will host a conference call to discuss the financial results for the first quarter 2006.

To access the Spectrum Conference Call:

Date: Thursday, May 4, 2006

Time: 1:30 pm Pacific / 4:30 pm Eastern

Dial-in number: 1.866.497.3339. A replay of the call will be available from May 4, 2006 to May 11, 2006 and can be accessed by dialing 1.866.501.5559 followed by the access code 21186053#.

Web cast: The live audio web cast can be accessed on Spectrum’s web site at www.spectrumsignal.com The replay will be available on Spectrum’s web site until May 11, 2006.

ABOUT SPECTRUM SIGNAL PROCESSING INC.

Spectrum Signal Processing Inc. (NASDAQ: SSPI / TSX: SSY) is a leading supplier of software defined platforms for defense electronics applications. Spectrum’s products and services are optimized for military communications, signals intelligence, surveillance, electronic warfare and satellite communications applications. Spectrum’s integrated, application-ready products provide its customers with compelling time-to-market and performance advantages while mitigating program risk and cost parameters. Spectrum Signal Processing (USA) Inc., based in Columbia, MD, provides applications engineering services and modified commercial-off-the-shelf platforms to the US Government, its allies and its prime contractors. For more information on Spectrum and its flexComm™ product line, please visit www.spectrumsignal.com.

™flexComm is a trademark of Spectrum Signal Processing Inc.

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Spectrum Contact:
Brent Flichel
Investor Relations
Phone: 604.676.6733
E-mail: brent_flichel@spectrumsignal.com

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