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 ~~Securities~~Month ~~Exchange Act~~ of ~~1934~~May 2006

For the Month of April 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)

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 ~~April~~May 2006, and incorporated by reference herein, are the following press releases made by the Registrant:

1. ~~Press~~ ~~Release dated April 4, 2006 2.~~ Press Release dated ~~April 20~~May 16, 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
	Title:	Vice President Finance and CFO

Dated: ~~April~~May 2831, 2006

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

~~Spectrum~~Northrop ~~Introduces~~Grumman ~~Industry~~Selects Spectrum’s ~~Most~~SDR-3000 ~~Powerful~~for ~~and Lowest Priced flexComm~~ Waveform ~~Design Studio~~Development

~~Platform~~Burnaby, ~~offers~~B.C., ~~turnkey~~Canada ~~solution~~— ~~with hardware~~May 16, 2006 — Spectrum Signal Processing Inc. today announced that Northrop Grumman Corporation (NYSE: NOC) will use Spectrum’s flexComm™ SDR-3000 software ~~and~~defined radio ~~all~~platform ~~the~~for ~~industrial~~internal ~~strength~~research and development of military satellite communications waveforms ~~tools~~with ~~necessary~~a ~~for~~focus ~~advanced~~on ~~waveform~~Software ~~design~~Communications Architecture (SCA) implementations.

~~Burnaby, B.C., Canada — April 4, 2006 —~~ “Spectrum’s ~~Signal~~long-standing ~~Processing~~involvement ~~Inc.~~with ~~today announced~~ the ~~flexCommä~~ ~~Waveform~~Joint ~~Design~~Tactical ~~Studio™,~~Radio aSystems ~~fully~~(JTRS) program ~~integrated~~as ~~commercial-off-the-shelf platform for~~well ~~waveform~~as ~~designers.~~its ~~The~~extensive ~~flexComm~~waveform ~~Waveform~~porting ~~Design~~experience ~~Studio~~will ~~provides~~help ~~the~~Northrop ~~industry’s~~grow ~~lowest~~its ~~price~~foundational ~~“IF to~~capability ~~Ethernet”~~with ~~solution~~respect ~~with~~to athe ~~complete~~SCA ~~run~~and SCA-~~time~~enabled ~~software stack~~waveforms, ainnovative ~~full~~wireless ~~suite~~architectures ~~of development tools~~ and aerospace ~~all~~communications ~~corresponding~~networks,” ~~licenses.~~said ~~This~~Greg ~~software~~Shreve, ~~stack includes a Software~~ Communications ~~Architecture (SCA) Core~~Research ~~Framework~~ and ~~Zeligsoft~~Development ~~Software’s~~Manager ~~powerful SCA development tools. The stack also~~with ~~includes~~Northrop ~~Microsoft® Windows® XP, a CORBA object request broker and Spectrum~~Grumman’s ~~quicComm™~~Mission ~~software development~~Systems ~~kit and SCA board support package~~sector.

“~~The~~Our ~~flexComm~~integrated ~~Waveform~~platform ~~Design~~provides ~~Studio~~Northrop isGrumman awith ~~low~~all ~~price~~the ~~productivity~~hardware, ~~tool~~software toand ~~accelerate~~design ~~development by~~tools ~~equipping~~necessary ~~each~~for ~~designer~~waveform ondevelopment ~~the~~in ~~project~~an ~~team~~SCA ~~with their own personal black-side~~ environment~~,” said Mark Briggs, Spectrum’s Vice President of Marketing~~. ~~“The~~This ~~flexComm~~enables ~~Waveform~~them ~~Design~~to ~~Studio simplifies~~commence ~~the~~work ~~supply chain by integrating all the necessary waveform design elements into one box.~~on ~~This~~their ~~turnkey~~application ~~solution includes hardware~~immediately,” ~~software,~~said ~~software~~Pascal ~~licenses~~Spothelfer, ~~development~~Spectrum’s ~~tools,~~President ~~system examples~~ and ~~source code for a sample application so work can begin immediately~~CEO.” ~~He adds,~~ “This same ~~single~~proven ~~reconfigurable software defined radio~~ platform ~~supports~~is ~~the~~being ~~development~~used ofby ~~both~~other ~~narrowband and~~customers ~~wideband waveforms and is ideal~~ for ~~individual~~deployments ~~waveform~~that ~~developers~~require ~~who~~high ~~must~~performance ~~later port their~~and ~~waveforms~~high tochannel ~~deployable platforms, such as Spectrum’s SDR-3000 and SDR-4000~~density.”

The ~~flexComm~~SDR-3000 ~~Waveform Design Studio system~~ is ~~based~~a ~~upon~~heterogeneous ~~Spectrum’s flexComm family of~~ processing ~~and~~ ~~analog-to-digital/digital-to-analog~~platform ~~converter~~incorporating ~~modules. The system incorporates a single~~ Xilinx® ~~Virtex-4™~~ field programmable gate arrays, ~~array~~IBM and ~~multiple~~Freescale™ PowerPC® processors and Texas Instruments’ ~~TMS320C6416™~~ digital signal ~~processing~~ ~~devices~~processors. ~~all~~It also ~~interconnected~~includes ~~through~~Harris ~~high~~Corporation’s ~~performance~~SCA ~~communications~~Core ~~fabrics~~Framework, ~~integrated into~~Wind anRiver®’s ~~Intel~~VxWorks® ~~Xeon™~~real-time ~~workstation.~~operating system ~~The~~and ~~flexComm~~Spectrum’s ~~Waveform~~quicComm™ ~~Design~~hardware ~~Studio~~abstraction ~~supports~~layer, ~~two~~which ~~receive~~facilitates algorithm partitioning and ~~two transmit~~programming ~~channels~~with ata ~~industry~~real-time ~~standard~~operating 10system.7, ~~21.4~~The ~~and~~SCA 70is ~~MHz~~an IFopen ~~with~~architecture developed ~~bandwidths~~by inthe ~~excess~~US Department of ~~30 MHz.~~Defense Itfor ~~also~~its ~~supports~~JTRS ~~“RF~~program. toFor ~~Ethernet”~~more ~~for~~information HFon ~~and~~the SDR-3000, ~~VHF~~please ~~frequency~~visit ~~bands~~www.spectrumsignal.com/products.

~~The~~ABOUT ~~system~~NORTHROP ~~includes~~GRUMMAN ~~all software application libraries, an operating system and Harris~~CORPORATION Corporation’s SCA Core Framework along with Zeligsoft development tools providing a complete SCA development environment with code generation capability. The flexComm Waveform Design Studio also includes source code for a sample application illustrating a complete transmit and receive data flow from the RF/IF digital up and down conversion through Ethernet.

~~The~~Northrop ~~flexComm~~Grumman ~~Waveform~~Corporation ~~Design~~is ~~Studio~~a isglobal ~~available~~defense ~~now~~company ~~and~~headquartered ~~priced~~in atLos ~~$62~~Angeles,~~900~~ inCA. ~~North~~Northrop Grumman ~~America~~provides technologically advanced, innovative products, services and solutions in systems ~~$69~~integration,~~900~~ ~~internationally~~defense electronics, information technology, advanced aircraft, shipbuilding and space technology. ~~Additional~~With ~~product~~approximately ~~information~~125,000 ~~can~~employees beand ~~found~~operations atin all 50 states and 25 countries, ~~http://www~~Northrop Grumman serves U.~~spectrumsignal~~S.~~com/products~~ and international military, government and commercial customers.

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.

FORWARD-LOOKING SAFE HARBOUR STATEMENT

This news release contains forward-looking statements related to sales of the Spectrum Signal Processing Inc. flexComm product line. 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

~~availability of components, changing~~1 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.

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 ~~Waveform~~quicComm ~~Design Studio~~ are trademarks of Spectrum Signal Processing Inc. ~~Microsoft~~ ~~and~~Xilinx ~~Windows~~is ~~are~~a registered trademark ~~trademarks~~ of ~~Microsoft~~Xilinx ~~Corp~~Inc. ~~Xilinx~~Freescale is a ~~registered~~ trademark ~~and~~ ~~Virtex-4 is a trademark~~ of ~~Xilinx~~Freescale Semiconductor, Inc. ~~TMS320C64x~~PowerPC is a registered trademark of ~~Texas~~International ~~Instruments.~~Business ~~Intel~~Machines ~~is a~~Corporation. ~~registered~~Wind ~~trademark~~River and ~~Xeon~~VxWorks isare registered atrademarks ~~trademark~~ of ~~Intel~~Wind ~~Corporation~~River Systems, Inc. Other product and company names mentioned may be trademarks and/or registered trademarks of their respective holders.

SPECTRUM ~~CONTACT~~CONTACTS

Mark Briggs Technical and Trade Media Tel: 604.676.6743 Email: mark_briggs@spectrumsignal.com


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		Email: brent_flichel@spectrumsignal.com

~~MEDIA ADVISORY~~2

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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