Subject: Re: Loudspeaker with directivity similar to a human talker From: Pang <sound08@xxxxxxxx> Date: Thu, 5 Mar 2009 11:10:43 +0800 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>This is a multi-part message in MIME format. --=====003_Dragon046248653384_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 VGhhbmtzIGZvciBhbGwuDQoNClRoZSBCJksgYW5kIEdSQVMgbW91dGggc2ltdWxhdG9yIGFyZSBl eHBlbnNpdmUuDQoNCkkgIGZpbmQgYSBib29rIHdyb3RlOg0KICBJbiBjZXJ0YWluIGNhc2VzLCBv dGhlciBzb3VyY2UgZGlyZWN0aXZpdHkgcGF0dGVybnMgdGhhbiBvbW5pZGlyZWN0aW9uYWwgY2Fu IGJlIG9mIGludGVyZXN0LiBGb3IgZXhhbXBsZSwgYSBkaXJlY3Rpdml0eSBsaWtlIHRoYXQgb2Yg YSBodW1hbiB0YWxrZXIgbWF5IGJlIHJlbGV2YW50IGlmIHRoZSBtZWFzdXJlbWVudCBpcyByZWxh dGVkIHRvIHRoZSBpbnRlbGxpZ2liaWxpdHkgb2Ygc3BlZWNoIG9yIHRvIG1lYXN1cmVtZW50cyBv biB0aGUgc3RhZ2UgaW4gYW4gb3BlcmEgaG91c2UuIEEgc3VpdGFibGUgdGFsa2VyL3NpbmdlciBk aXJlY3Rpdml0eSBjYW4gYmUgb2J0YWluZWQgYnkgdXNpbmcgYSBzbWFsbCBsb3Vkc3BlYWtlciB1 bml0IChtZW1icmFuZSBkaWFtZXRlciBhYm91dCB0aHJlZSB0byBmb3VyIGluY2hlcykgbW91bnRl ZCBpbiBhIGNsb3NlZCBib3ggb2Ygc2l6ZSBjb21wYXJhYmxlIHRvIHRoYXQgb2YgdGhlIGh1bWFu IGhlYWQuIA0KDQpBbmQgaW4gc29tZSBwYXBlcnMsIHN1Y2ggYXMgdGhlIFBTQiBhbHBoYSBNaXRl IGFuZCBQU0IgYWxwaGEgSUkgKCBub3Qgc2VsbCBub3cpIGxvdWRzcGVha2VycyBhcmUgdXNlZCBm b3IgaW50ZWxsaWdpYmlsaXR5IHRlc3QuIEZyb20gaHR0cDovL3d3dy5hdWRpdG9yeS5vcmcvbWhv bmFyYy8yMDA1L21zZzAwNDQ3Lmh0bWwsIEZyYW5jayB1c2VkIEpCTDogTFNSMjVQIGZvciByb29t IGFjb3VzdGljcy4NCg0KICBJIHdvdWxkIGxpa2UgdG8gdXNlIGEgc21hbGwgbG91ZHNwZWFrZXIo IGl0IGlzIGNoZWFwZXIgdGhhbiBtb3V0aCBzaW11bGF0b3IpIHRvIHJlcHJvZHVjZSB0ZXN0IHNp Z25hbC4gSG93ZXZlciwgSSBkbyBub3Qga25vdyB3aGljaCB0eXBlcyBhbmQgYnJhbmRzIG9mICBs b3Vkc3BlYWtlcnMgYXJlIHN1aXRmdWwgZm9yIG15IHdvcmsuICBJdCBtYXkgYmUgYmVzdCB0aGF0 IHRoZSBsb3Vkc3BlYWtlciBoYXMgaXRzIGRpcmVjdGl2aXR5IGRhdGEuIA0KDQoNCiAgIFhpbmcN Cg0KDQqgoD9JIHRoaW5rIGV2ZXJ5IGxvdWRzcGVha2VyIG9mIHRoZSBzYW1lIHNpemWgYSBodW1h biBoZWFkIGhhcyB3b3VsZCBjb21wbHkuIE5vcnNvbmljIHJlY29tbWVuZHMgdXNpbmcgYSBUaXZv bGkgbG91ZHNwZWFrZXIgdG8gbWVhc3VyZSBTVElQQSB3aXRoIE5vcjE0MCBhbmFseXplci4NCj8v ZGl2PiANCqCgP0Jlc3QgcmVnYXJkcy6goD8NCg0KDQoyMDA5LzMvNCBUb255IE1pbGxlciA8YW50 b25pby5taWxsZXJAZ21haWwuY29tPg0KDQpTdWdnZXN0aW5nIGEgaGVhZCBhbmQgdG9yc28gc2lt dWxhdG9yIChIQVRTKSBtaWdodCBiZSBvdmVya2lsbCBvbiB5b3VyIGJ1ZGdldCBpZiB5b3UgYXJl IGp1c3QgaW50ZXJlc3RlZCBpbiBnZXR0aW5nIHRoZSBkaXJlY3Rpdml0eSBvZiBhbiBhdmVyYWdl IGh1bWFuIG1vdXRoLiANCg0KVGhlIEdSQVMgbW91dGggc2ltdWxhdG9yIGhhcyBhbiBpbnRlcm5h bCBhbXBsaWZlcjoNCmh0dHA6Ly93d3cuZ3Jhc2luZm8uZGsvZG9jdW1lbnRzL3BkXzQ0QUJfdmVy XzI3XzA1XzA1LlBERg0KDQpUaGUgQiZLIG1vdXRoIHNpbXVsYXRvciByZXF1aXJlcyBhbiBleHRl cm5hbCBhbXBsaWZpZXI6DQpodHRwOi8vd3d3LmJrc3YuY29tL2RvYy9icDA1MDUucGRmDQoNCkJv dGggbW91dGggc2ltdWxhdG9ycyBjb25mb3JtIHRvIHN0YW5kYXJkczogSUVFRSAyNjkgYW5kIElU VS1UIFAuNTEuDQoNCi1Ub255IA0KDQoNCg0KT24gV2VkLCBNYXIgNCwgMjAwOSBhdCAxMToxMCBB TSwgUGFuZyA8c291bmQwOEAxNjMuY29tPiB3cm90ZToNCg0KRGVhciBMaXN0DQoNCqBJIHdvdWxk IGxpa2UgdG8gdXNlIGEgbG91ZHNwZWFrZXIgd2l0aCBkaXJlY3Rpb25hbCBwcm9wZXJ0aWVzIHNp bWlsYXIgdG8gYSBodW1hbiB0YWxrZXIgdG8gcGxheSB0aGUgc3BlZWNoIHNpZ25hbHMgaW4gcm9v bXMgZm9yIHNwZWVjaCBpbnRlbGxpZ2liaWxpdHkgdGVzdC4goEkgZG8gbm90IGtub3cgd2hpY2gg bG91ZHNwZWFrZXJzIGhhdmUgZGlyZWN0aW9uYWwgcHJvcGVydGllcyBzaW1pbGFyIHRvIGEgaHVt YW4gdGFsa2VyLiBDb3VsZCBzb21lb25lIHBsZWFzZSByZWNvbW1hbmQgYSBsb3Vkc3BlYWtlcnMg Zm9yIG15IHdvcms/DQoNCqBUaGFua3MsDQoNCj9YaW5nIFhpbmcNCg== --=====003_Dragon046248653384_===== Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: base64 PCFET0NUWVBFIEhUTUwgUFVCTElDICItLy9XM0MvL0RURCBIVE1MIDQuMCBUcmFuc2l0aW9uYWwv L0VOIj4NCjxIVE1MPjxIRUFEPg0KPE1FVEEgaHR0cC1lcXVpdj1Db250ZW50LVR5cGUgY29udGVu dD0idGV4dC9odG1sOyBjaGFyc2V0PWdiMjMxMiI+DQo8TUVUQSBjb250ZW50PSJNU0hUTUwgNi4w MC4yOTAwLjU3MjYiIG5hbWU9R0VORVJBVE9SPjwvSEVBRD4NCjxCT0RZIGJnQ29sb3I9I2VhZWFl YT4NCjxESVY+PEZPTlQgZmFjZT3LzszlIHNpemU9Mj48L0ZPTlQ+PC9ESVY+DQo8RElWPlRoYW5r cyBmb3IgYWxsLjwvRElWPg0KPERJVj4mbmJzcDs8L0RJVj4NCjxESVY+VGhlIEImYW1wO0sgYW5k IEdSQVMgbW91dGggc2ltdWxhdG9yIGFyZSBleHBlbnNpdmUuPC9ESVY+DQo8RElWPiZuYnNwOzwv RElWPg0KPERJVj5JJm5ic3A7IGZpbmQgYSBib29rIHdyb3RlOjwvRElWPg0KPERJVj4mbmJzcDsg PFNQQU4gbGFuZz1FTi1VUyANCnN0eWxlPSJGT05ULVNJWkU6IDguNXB0OyBGT05ULUZBTUlMWTog J1RpbWVzIE5ldyBSb21hbic7IG1zby1mYXJlYXN0LWZvbnQtZmFtaWx5OiDLzszlOyBtc28tYW5z aS1sYW5ndWFnZTogRU4tVVM7IG1zby1mYXJlYXN0LWxhbmd1YWdlOiBaSC1DTjsgbXNvLWJpZGkt bGFuZ3VhZ2U6IEFSLVNBIj48Rk9OVCANCnNpemU9Mz5JbiBjZXJ0YWluIGNhc2VzLCBvdGhlciBz b3VyY2UgZGlyZWN0aXZpdHkgcGF0dGVybnMgdGhhbiBvbW5pZGlyZWN0aW9uYWwgDQpjYW4gYmUg b2YgaW50ZXJlc3QuIEZvciBleGFtcGxlLCBhIGRpcmVjdGl2aXR5IGxpa2UgdGhhdCBvZiBhIGh1 bWFuIHRhbGtlciBtYXkgDQpiZSByZWxldmFudCBpZiB0aGUgbWVhc3VyZW1lbnQgaXMgcmVsYXRl ZCB0byB0aGUgaW50ZWxsaWdpYmlsaXR5IG9mIHNwZWVjaCBvciB0byANCm1lYXN1cmVtZW50cyBv biB0aGUgc3RhZ2UgaW4gYW4gb3BlcmEgaG91c2UuIEEgc3VpdGFibGUgdGFsa2VyL3NpbmdlciAN CmRpcmVjdGl2aXR5IGNhbiBiZSBvYnRhaW5lZCBieSB1c2luZyBhIHNtYWxsIGxvdWRzcGVha2Vy IHVuaXQgKG1lbWJyYW5lIGRpYW1ldGVyIA0KYWJvdXQgdGhyZWUgdG8gZm91ciBpbmNoZXMpIG1v dW50ZWQgaW4gYSBjbG9zZWQgYm94IG9mIHNpemUgY29tcGFyYWJsZSB0byB0aGF0IA0Kb2YgdGhl IGh1bWFuIGhlYWQuIDwvRk9OVD48L1NQQU4+PC9ESVY+DQo8RElWPjxTUEFOIGxhbmc9RU4tVVMg DQpzdHlsZT0iRk9OVC1TSVpFOiA4LjVwdDsgRk9OVC1GQU1JTFk6ICdUaW1lcyBOZXcgUm9tYW4n OyBtc28tZmFyZWFzdC1mb250LWZhbWlseTogy87M5TsgbXNvLWFuc2ktbGFuZ3VhZ2U6IEVOLVVT OyBtc28tZmFyZWFzdC1sYW5ndWFnZTogWkgtQ047IG1zby1iaWRpLWxhbmd1YWdlOiBBUi1TQSI+ PEZPTlQgDQpzaXplPTM+PC9GT05UPjwvU1BBTj4mbmJzcDs8L0RJVj4NCjxESVY+PFNQQU4gbGFu Zz1FTi1VUyANCnN0eWxlPSJGT05ULVNJWkU6IDguNXB0OyBGT05ULUZBTUlMWTogJ1RpbWVzIE5l dyBSb21hbic7IG1zby1mYXJlYXN0LWZvbnQtZmFtaWx5OiDLzszlOyBtc28tYW5zaS1sYW5ndWFn ZTogRU4tVVM7IG1zby1mYXJlYXN0LWxhbmd1YWdlOiBaSC1DTjsgbXNvLWJpZGktbGFuZ3VhZ2U6 IEFSLVNBIj48Rk9OVCANCnNpemU9Mz5BbmQgaW4gc29tZSBwYXBlcnMsIHN1Y2ggYXMgdGhlIFBT QiBhbHBoYSBNaXRlIGFuZCBQU0IgYWxwaGEgSUkgKCBub3QgDQpzZWxsIG5vdykgbG91ZHNwZWFr ZXJzIGFyZSB1c2VkIGZvciBpbnRlbGxpZ2liaWxpdHkgdGVzdC4gRnJvbSA8QSANCmhyZWY9Imh0 dHA6Ly93d3cuYXVkaXRvcnkub3JnL21ob25hcmMvMjAwNS9tc2cwMDQ0Ny5odG1sIj5odHRwOi8v d3d3LmF1ZGl0b3J5Lm9yZy9taG9uYXJjLzIwMDUvbXNnMDA0NDcuaHRtbDwvQT4sIA0KRnJhbmNr IHVzZWQgSkJMOiBMU1IyNVAgZm9yIHJvb20gYWNvdXN0aWNzLjwvRk9OVD48L1NQQU4+PC9ESVY+ DQo8RElWPjxTUEFOIGxhbmc9RU4tVVMgDQpzdHlsZT0iRk9OVC1TSVpFOiA4LjVwdDsgRk9OVC1G QU1JTFk6ICdUaW1lcyBOZXcgUm9tYW4nOyBtc28tZmFyZWFzdC1mb250LWZhbWlseTogy87M5Tsg bXNvLWFuc2ktbGFuZ3VhZ2U6IEVOLVVTOyBtc28tZmFyZWFzdC1sYW5ndWFnZTogWkgtQ047IG1z by1iaWRpLWxhbmd1YWdlOiBBUi1TQSI+PEZPTlQgDQpzaXplPTM+PC9GT05UPjwvU1BBTj4mbmJz cDs8L0RJVj4NCjxESVY+PFNQQU4gbGFuZz1FTi1VUyANCnN0eWxlPSJGT05ULVNJWkU6IDguNXB0 OyBGT05ULUZBTUlMWTogJ1RpbWVzIE5ldyBSb21hbic7IG1zby1mYXJlYXN0LWZvbnQtZmFtaWx5 OiDLzszlOyBtc28tYW5zaS1sYW5ndWFnZTogRU4tVVM7IG1zby1mYXJlYXN0LWxhbmd1YWdlOiBa SC1DTjsgbXNvLWJpZGktbGFuZ3VhZ2U6IEFSLVNBIj48Rk9OVCANCnNpemU9Mz4mbmJzcDsgSSB3 b3VsZCBsaWtlIHRvIHVzZSBhIHNtYWxsIGxvdWRzcGVha2VyKCBpdCBpcyBjaGVhcGVyIHRoYW4g bW91dGggDQpzaW11bGF0b3IpJm5ic3A7dG8gcmVwcm9kdWNlIHRlc3Qgc2lnbmFsLiBIb3dldmVy LCBJIGRvIG5vdCBrbm93IHdoaWNoIHR5cGVzIGFuZCANCmJyYW5kcyBvZiAmbmJzcDtsb3Vkc3Bl YWtlcnMgYXJlIHN1aXRmdWwgZm9yIG15IHdvcmsuJm5ic3A7IEl0IG1heSBiZSBiZXN0IHRoYXQg DQp0aGUgbG91ZHNwZWFrZXIgaGFzIGl0cyBkaXJlY3Rpdml0eSBkYXRhLiA8L0RJVj4NCjxESVY+ PEJSPjwvRElWPjwvRk9OVD48L1NQQU4+DQo8RElWPiZuYnNwOyZuYnNwOyBYaW5nPC9ESVY+DQo8 RElWPiZuYnNwOzwvRElWPg0KPERJVj4mbmJzcDs8L0RJVj4NCjxESVY+PEZPTlQgc2l6ZT0yPg0K PFRBQkxFIHdpZHRoPSIxMDAlIj4NCiAgPFRCT0RZPg0KICA8VFI+DQogICAgPFREIHdpZHRoPSIx MDAlIj4NCiAgICAgIDxCTE9DS1FVT1RFIA0KICAgICAgc3R5bGU9IlBBRERJTkctUklHSFQ6IDBw eDsgUEFERElORy1MRUZUOiA1cHg7IE1BUkdJTi1MRUZUOiA1cHg7IEJPUkRFUi1MRUZUOiAjMDAw MDAwIDJweCBzb2xpZDsgTUFSR0lOLVJJR0hUOiAwcHgiPg0KICAgICAgICA8RElWPqCgP0kgdGhp bmsgZXZlcnkgbG91ZHNwZWFrZXIgb2YgdGhlIHNhbWUgc2l6ZaBhIGh1bWFuIGhlYWQgaGFzIHdv dWxkIA0KICAgICAgICBjb21wbHkuIE5vcnNvbmljIHJlY29tbWVuZHMgdXNpbmcgYSBUaXZvbGkg bG91ZHNwZWFrZXIgdG8gbWVhc3VyZSBTVElQQSANCiAgICAgICAgd2l0aCBOb3IxNDAgYW5hbHl6 ZXIuPC9ESVY+DQogICAgICAgIDxESVY+Py9kaXYmZ3Q7IA0KICAgICAgICA8RElWPqCgP0Jlc3Qg cmVnYXJkcy6goD88QlI+PEJSPjwvRElWPg0KICAgICAgICA8RElWIGNsYXNzPWdtYWlsX3F1b3Rl PjIwMDkvMy80IFRvbnkgTWlsbGVyIDxTUEFOIGRpcj1sdHI+Jmx0OzxBIA0KICAgICAgICBocmVm PSJtYWlsdG86YW50b25pby5taWxsZXJAZ21haWwuY29tIj5hbnRvbmlvLm1pbGxlckBnbWFpbC5j b208L0E+Jmd0OzwvU1BBTj48QlI+DQogICAgICAgIDxCTE9DS1FVT1RFIGNsYXNzPWdtYWlsX3F1 b3RlIA0KICAgICAgICBzdHlsZT0iUEFERElORy1MRUZUOiAxZXg7IE1BUkdJTjogMHB4IDBweCAw cHggMC44ZXg7IEJPUkRFUi1MRUZUOiAjY2NjIDFweCBzb2xpZCI+U3VnZ2VzdGluZyANCiAgICAg ICAgICBhIGhlYWQgYW5kIHRvcnNvIHNpbXVsYXRvciAoSEFUUykgbWlnaHQgYmUgb3ZlcmtpbGwg b24geW91ciBidWRnZXQgaWYgDQogICAgICAgICAgeW91IGFyZSBqdXN0IGludGVyZXN0ZWQgaW4g Z2V0dGluZyB0aGUgZGlyZWN0aXZpdHkgb2YgYW4gYXZlcmFnZSBodW1hbiANCiAgICAgICAgICBt b3V0aC4gPEJSPjxCUj5UaGUgR1JBUyBtb3V0aCBzaW11bGF0b3IgaGFzIGFuIGludGVybmFsIA0K ICAgICAgICAgIGFtcGxpZmVyOjxCUj48QSANCiAgICAgICAgICBocmVmPSJodHRwOi8vd3d3Lmdy YXNpbmZvLmRrL2RvY3VtZW50cy9wZF80NEFCX3Zlcl8yN18wNV8wNS5QREYiIA0KICAgICAgICAg IHRhcmdldD1fYmxhbms+aHR0cDovL3d3dy5ncmFzaW5mby5kay9kb2N1bWVudHMvcGRfNDRBQl92 ZXJfMjdfMDVfMDUuUERGPC9BPjxCUj48QlI+VGhlIA0KICAgICAgICAgIEImYW1wO0sgbW91dGgg c2ltdWxhdG9yIHJlcXVpcmVzIGFuIGV4dGVybmFsIGFtcGxpZmllcjo8QlI+PEEgDQogICAgICAg ICAgaHJlZj0iaHR0cDovL3d3dy5ia3N2LmNvbS9kb2MvYnAwNTA1LnBkZiIgDQogICAgICAgICAg dGFyZ2V0PV9ibGFuaz5odHRwOi8vd3d3LmJrc3YuY29tL2RvYy9icDA1MDUucGRmPC9BPjxCUj48 QlI+Qm90aCBtb3V0aCANCiAgICAgICAgICBzaW11bGF0b3JzIGNvbmZvcm0gdG8gc3RhbmRhcmRz OiBJRUVFIDI2OSBhbmQgSVRVLVQgUC41MS48QlI+PEZPTlQgDQogICAgICAgICAgY29sb3I9Izg4 ODg4OD48QlI+LVRvbnk8L0ZPTlQ+IA0KICAgICAgICAgIDxESVY+DQogICAgICAgICAgPERJVj48 L0RJVj4NCiAgICAgICAgICA8RElWIGNsYXNzPWg1PjxCUj48QlI+DQogICAgICAgICAgPERJViBj bGFzcz1nbWFpbF9xdW90ZT5PbiBXZWQsIE1hciA0LCAyMDA5IGF0IDExOjEwIEFNLCBQYW5nIDxT UEFOIA0KICAgICAgICAgIGRpcj1sdHI+Jmx0OzxBIGhyZWY9Im1haWx0bzpzb3VuZDA4QDE2My5j b20iIA0KICAgICAgICAgIHRhcmdldD1fYmxhbms+c291bmQwOEAxNjMuY29tPC9BPiZndDs8L1NQ QU4+IHdyb3RlOjxCUj4NCiAgICAgICAgICA8QkxPQ0tRVU9URSBjbGFzcz1nbWFpbF9xdW90ZSAN CiAgICAgICAgICBzdHlsZT0iUEFERElORy1MRUZUOiAxZXg7IE1BUkdJTjogMHB0IDBwdCAwcHQg MC44ZXg7IEJPUkRFUi1MRUZUOiByZ2IoMjA0LDIwNCwyMDQpIDFweCBzb2xpZCI+RGVhciANCiAg ICAgICAgICAgIExpc3Q8QlI+PEJSPqBJIHdvdWxkIGxpa2UgdG8gdXNlIGEgbG91ZHNwZWFrZXIg d2l0aCBkaXJlY3Rpb25hbCANCiAgICAgICAgICAgIHByb3BlcnRpZXMgc2ltaWxhciB0byBhIGh1 bWFuIHRhbGtlciB0byBwbGF5IHRoZSBzcGVlY2ggc2lnbmFscyBpbiANCiAgICAgICAgICAgIHJv b21zIGZvciBzcGVlY2ggaW50ZWxsaWdpYmlsaXR5IHRlc3QuIKBJIGRvIG5vdCBrbm93IHdoaWNo IA0KICAgICAgICAgICAgbG91ZHNwZWFrZXJzIGhhdmUgZGlyZWN0aW9uYWwgcHJvcGVydGllcyBz aW1pbGFyIHRvIGEgaHVtYW4gdGFsa2VyLiANCiAgICAgICAgICAgIENvdWxkIHNvbWVvbmUgcGxl YXNlIHJlY29tbWFuZCBhIGxvdWRzcGVha2VycyBmb3IgbXkgDQogICAgICAgICAgICB3b3JrPzxC Uj48QlI+oFRoYW5rcyw8QlI+PEJSPj9YaW5nIA0KICAgICAgICAgIFhpbmc8QlI+PC9CTE9DS1FV T1RFPjwvRElWPjxCUj48L0RJVj48L0RJVj48L0JMT0NLUVVPVEU+PC9ESVY+PEJSPjwvRElWPjwv QkxPQ0tRVU9URT48L1REPjwvVFI+PC9UQk9EWT48L1RBQkxFPjwvRk9OVD48L0RJVj4NCjxESVY+ Jm5ic3A7PC9ESVY+PC9CT0RZPjwvSFRNTD4NCg== --=====003_Dragon046248653384_=====--