{"id":3713,"date":"2022-11-20T02:14:03","date_gmt":"2022-11-19T17:14:03","guid":{"rendered":"https:\/\/k.foolslab.net\/dailyreport\/?p=3713"},"modified":"2022-11-20T02:14:17","modified_gmt":"2022-11-19T17:14:17","slug":"2022-11-19","status":"publish","type":"post","link":"https:\/\/k.foolslab.net\/dailyreport\/2022-11-19\/","title":{"rendered":"2022\/11\/19(\u571f)"},"content":{"rendered":"\n

\u4f8b\u306b\u3088\u3063\u3066\u663c\u3059\u304e\u307e\u3067\u5bdd\u3066\u3044\u305f\u3002<\/p>\n\n\n\n

\n\n\n\n

ABC278\u306b\u53c2\u52a0\u3057\u305f\u3002\u30da\u30ca\u3092\u51fa\u3055\u306a\u304b\u3063\u305f\u306e\u306f\u826f\u304b\u3063\u305f\u304c\u3001\u6dfb\u3048\u5b57\u30df\u30b9\u3068\u304b\u306e\u3057\u3087\u3046\u3082\u306a\u3044\u76f4\u3057\u306b\u6642\u9593\u3092\u98df\u3063\u305f\u306e\u3067\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u624b\u65e9\u304f\u6b63\u78ba\u306b\u3084\u308c\u3070\u3082\u3063\u3068\u4e0a\u4f4d\u304c\u72d9\u3048\u305f\u3088\u3046\u306b\u601d\u3046\u3002\u3068\u3044\u3046\u304b\u30b5\u30f3\u30d7\u30eb\u30b1\u30fc\u30b9\u304c\u89aa\u5207\u3058\u3083\u306a\u304b\u3063\u305f\u3089\u7121\u9650\u306bWA\u51fa\u3057\u3066\u305f\u53ef\u80fd\u6027\u3082\u3042\u308b\u6c17\u304c\u3059\u308b\u3002<\/p>\n\n\n\n

A: A\u554f\u984c\u3067for\u306e\u8981\u308b\u554f\u984c\u3092\u51fa\u3055\u306a\u3044\u3068\u3044\u3046\u5236\u9650\u306f\u5b8c\u5168\u306b\u6d88\u3048\u305f\u3089\u3057\u3044\u3002<\/p>\n\n\n\n

B: 1\u5206\u305a\u3064\u56de\u3057\u3066\u3044\u304f\u3060\u3051\u3002<\/p>\n\n\n\n

C: map<int, set<int>><\/p>\n\n\n\n

D: \u64cd\u4f5c1\u3067\u5168\u3066\u306e\u5024\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u304f\u3060\u308a\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308b\u3002\u3069\u3046\u305b\u4e00\u5ea6\u306b1\u3064\u306e\u5024\u3057\u304b\u6c42\u3081\u3089\u308c\u306a\u3044\u3053\u3068\u3092\u8e0f\u307e\u3048\u308b\u3068\u5168\u3066\u3092\u4e00\u6642\u306b\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u306f\u306a\u304f\u3001\u300c\u6700\u5f8c\u306b\u64cd\u4f5c1\u304c\u884c\u308f\u308c\u305f\u6642\u523b\u300d\u3068\u5404\u5024\u306b\u3064\u3044\u3066\u306e\u300c\u6700\u5f8c\u306b\u64cd\u4f5c1\u3092\u53cd\u6620\u3057\u305f\u6642\u523b\u300d\u3092\u8a18\u9332\u3059\u308c\u3070\u3088\u3044\u3002\u64cd\u4f5c2,3\u304c\u884c\u308f\u308c\u308b\u305f\u3073\u306b\u5bfe\u8c61\u306e\u8981\u7d20\u306e\u300c\u6700\u5f8c\u306b\u64cd\u4f5c1\u3092\u53cd\u6620\u3057\u305f\u6642\u523b\u300d\u3092\u898b\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u66f4\u65b0\u3059\u308c\u3070\u3088\u3044\u3002<\/p>\n\n\n\n

E: \u5404\u6570\u5024\u306e\u51fa\u73fe\u6570\u3092\u611a\u76f4\u306b\u6570\u3048\u3066\u3044\u308b\u3068\u5168\u4f53$O((H-w)(W-w)HWN)$\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u3042\u3089\u304b\u3058\u30812\u6b21\u5143\u7d2f\u7a4d\u548c\u3067\u5404\u6570\u5024\u306e\u51fa\u73fe\u6570\u3092\u6c42\u3081\u3066\u304a\u3051\u3070\u4efb\u610f\u306e\u9577\u65b9\u5f62\u5185\u306e\u6570\u5024\u306e\u51fa\u73fe\u6570\u3092$O(1)$\u3067\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u5168\u4f53$O(HWN)$\u3067\u89e3\u3051\u308b\u3002<\/p>\n\n\n\n

F: \u30b7\u30f3\u30d7\u30eb\u306a\u30b2\u30fc\u30e0\u554f\u984c\u3002\u3069\u306e\u6587\u5b57\u5217\u304c\u65e2\u306b\u4f7f\u308f\u308c\u305f\u304b\u3001\u6700\u5f8c\u306b\u3069\u306e\u6587\u5b57\u5217\u3092\u4f7f\u3063\u305f\u304b\u3092\u8003\u3048\u308b\u3068\u72b6\u614b\u6570\u306f\u9ad8\u3005$N2^N$\u901a\u308a\u306a\u306e\u3067\u3001\u3061\u3083\u3093\u3068\u5f8c\u9000\u89e3\u6790\u3059\u308c\u3070\u554f\u984c\u306a\u304f\u6c42\u307e\u308b\u3002<\/p>\n\n\n\n

G: \u89e3\u3051\u305a\u3002grundy\u6570\u3092\u6c42\u3081\u3088\u3046\u3068\u601d\u3048\u3070\u6c42\u3081\u3089\u308c\u305d\u3046\u3060\u3001\u3068\u3044\u3046\u306e\u306f\u5206\u304b\u3063\u305f\u306e\u3060\u304c\u300110^9\u30aa\u30fc\u30c0\u30fc\u306a\u306e\u3067\u3044\u304f\u3089\u5b9a\u6570\u500d\u304c\u5c0f\u3055\u304f\u3066\u3082TL\u306b\u306f\u9593\u306b\u5408\u308f\u306a\u3044\u3002\u89e3\u8aac\u3092\u8aad\u3080\u306b\u3001\u3084\u306f\u308a\u300c\u305d\u308c\u306f\u4e00\u5fdc\u6b63\u3057\u3044\u3051\u3069\u9ad8\u901f\u5316\u304c\u8981\u308b\u300d\u3068\u3044\u3046\u611f\u3058\u3089\u3057\u3044\u3002<\/p>\n\n\n\n

\u60f3\u5b9a\u89e3\u306f\u771f\u4f3c\u3063\u3053\u6226\u7565\u3068\u3044\u3046\u3084\u3064\u3089\u3057\u3044\u3002\u8da3\u65e8\u306f\u5206\u304b\u308b\u304c\u30c6\u30af\u30cb\u30c3\u30af\u3068\u3057\u3066\u62bd\u8c61\u7684\u3059\u304e\u3066\u3001\u6b21\u540c\u3058\u3088\u3046\u306a\u554f\u984c\u304c\u51fa\u3066\u304d\u3066\u3082\u3061\u3083\u3093\u3068\u5fdc\u7528\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u602a\u3057\u3044\u3002<\/p>\n\n\n\n

\u6700\u8fd1\u306eABC\u306fG\u3067\u3084\u305f\u3089\u9ad8\u5ea6\u306a\u5178\u578b\uff1f\u304c\u51fa\u3055\u308c\u3066\u3044\u308b\u6c17\u304c\u3059\u308b\u3002\u3053\u306e\u8fba\u3092\u3061\u3083\u3093\u3068\u5c65\u4fee\u3057\u3066\u3044\u3051\u3070ARC\u306b\u3082\u901a\u7528\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u304f\u3093\u3060\u308d\u3046\u304b\u3002<\/p>\n\n\n\n

\n\n\n\n

OpenAL-soft\u304cLGPL\u3067\u6271\u3044\u306b\u304f\u3044\u306e\u3067\u3001\u4ee3\u66ff\u624b\u6bb5\u3092\u3061\u3087\u3063\u3068\u8abf\u3079\u305f\u3002libsoundio\u304c\u9078\u629e\u80a2\u306e\u4e2d\u3067\u306f\u60aa\u304f\u306a\u3055\u305d\u3046\u3002\u3060\u304c\u3001AndroidNDK\u3067\u4f7f\u3048\u308b\u304b\u3069\u3046\u304b\u304c\u672a\u77e5\u6570\u3002libsoundio\u306fALSA\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3089\u3057\u304f\u3001ALSA\u306a\u3089android\u3067\u3082\u4e00\u5fdc\u4f7f\u3048\u3066\u3082\u304a\u304b\u3057\u304f\u306a\u3044\u306e\u304b\u3068\u601d\u3046\u304c\u3001\u5206\u304b\u308a\u3084\u3059\u3044\u8cc7\u6599\u304c\u898b\u5f53\u305f\u3089\u306a\u3044\u3002<\/p>\n\n\n\n

\u660e\u78ba\u306bAndroid\u3067\u4f7f\u3048\u308b\u3082\u306e\u3068\u3057\u3066miniaudio\u304a\u3088\u3073soloud\u3068\u3044\u3046\u3084\u3064\u3092\u898b\u3064\u3051\u305f\u304c\u3001vcpkg\u3067\u5165\u308c\u3089\u308c\u306a\u3044\u3002<\/p>\n\n\n\n

\u307e\u305f\u3001\u3069\u308c\u3092\u4f7f\u3046\u306b\u3057\u3066\u3082OpenAL-soft\u306e\u3088\u3046\u306bHRTF\u3092\u7c21\u4fbf\u306b\u9069\u7528\u3059\u308b\u306e\u306f\u96e3\u3057\u305d\u3046\u3060\u3063\u305f\u3002\u81ea\u529b\u5b9f\u88c5\u3092\u898b\u636e\u3048\u3001OpenAL-soft\u306eHRTF\u5b9f\u88c5\u3092\u3061\u3083\u3093\u3068\u8aad\u3093\u3067\u307f\u308b\u3053\u3068\u306b\u3057\u305f\u3002<\/p>\n\n\n\n

\u3069\u3046\u3084\u3089HRIR\u3092\u611a\u76f4\u306b\u8db3\u3057\u3066\u3044\u3063\u3066\u308b\u3063\u307d\u3044\u3053\u3068\u304c\u5206\u304b\u3063\u305f\u3002\u5468\u6ce2\u6570\u7a7a\u9593\u4e0a\u3067\u304b\u3051\u7b97\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u3068\u601d\u3063\u3066\u3044\u305f\u304c\u3001\u305d\u3046\u3044\u3046\u3053\u3068\u306f\u306a\u3044\u3089\u3057\u3044\u3002\u3061\u3087\u3063\u3068\u8a08\u7b97\u91cf\u7684\u306b\u91cd\u305d\u3046\u306a\u6c17\u304c\u3059\u308b\u304c\u3001\u307e\u3042\u5b9a\u6570\u500d\u306f\u8efd\u3044\u3060\u308d\u3046\u304b\u3089\u554f\u984c\u306a\u3044\u306e\u3060\u308d\u3046\u3002<\/p>\n\n\n\n

https:\/\/github.com\/kcat\/openal-soft\/blob\/master\/core\/mixer\/hrtfbase.h#L17<\/a>
https:\/\/github.com\/kcat\/openal-soft\/blob\/master\/core\/mixer\/mixer_c.cpp#L88<\/a><\/p>\n\n\n\n

\u307e\u305f\u3001HRTF\u306e\u6e2c\u5b9a\u70b9\u306e\u9593\u3067\u88dc\u9593\u51e6\u7406\u3092\u884c\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u305f\u304c\u3001\u5b9f\u88c5\u3068\u3057\u3066\u306f\u304a\u305d\u3089\u304f\u300c2\u3064\u306e\u30d5\u30a3\u30eb\u30bf\u304b\u3089\u51fa\u305f\u97f3\u3092\u88dc\u5b8c\u3057\u3066\u3044\u308b\u300d\u3063\u307d\u3044\u3053\u3068\u304c\u5206\u304b\u3063\u305f\u30022\u3064\u306e\u30d5\u30a3\u30eb\u30bf\u3092\u5408\u308f\u305b\u3066\u65b0\u305f\u306a\u30d5\u30a3\u30eb\u30bf\u3092\u4f5c\u3063\u3066\u3044\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u3066\u3044\u305f\u306e\u3060\u304c\u3001\u305d\u3093\u306a\u9762\u5012\u304f\u3055\u3044\u3053\u3068\u306f\u3057\u3066\u3044\u306a\u3044\u3088\u3046\u3060\u3002<\/p>\n\n\n\n

https:\/\/github.com\/kcat\/openal-soft\/blob\/master\/core\/voice.cpp#L396<\/a><\/p>\n\n\n\n

\u4f7f\u3046\u30d5\u30a3\u30eb\u30bf\u3092\u9078\u5b9a\u3059\u308b\u51e6\u7406\u306f\u898b\u3064\u3051\u3089\u308c\u306a\u304b\u3063\u305f\u3002\u305d\u3082\u305d\u3082HRTF\u306e\u30c7\u30fc\u30bf\u306e\u5f62\u5f0f\u81ea\u4f53\u3088\u304f\u5206\u304b\u3089\u3093\u3002<\/p>\n\n\n\n

\n\n\n\n

2.5km\u30b8\u30e7\u30ae\u30f3\u30b0\u3057\u305f\u3002\u306a\u3093\u304b\u666e\u901a\u306b\u8d70\u308a\u5207\u308c\u3066\u308b\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4f8b\u306b\u3088\u3063\u3066\u663c\u3059\u304e\u307e\u3067\u5bdd\u3066\u3044\u305f\u3002 ABC278\u306b\u53c2\u52a0\u3057\u305f\u3002\u30da\u30ca\u3092\u51fa\u3055\u306a\u304b\u3063\u305f\u306e\u306f\u826f\u304b\u3063\u305f\u304c\u3001\u6dfb\u3048\u5b57\u30df\u30b9\u3068\u304b\u306e\u3057\u3087\u3046\u3082\u306a\u3044\u76f4\u3057\u306b\u6642\u9593\u3092\u98df\u3063\u305f\u306e\u3067\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u624b\u65e9\u304f\u6b63\u78ba\u306b\u3084\u308c\u3070\u3082\u3063\u3068\u4e0a\u4f4d\u304c\u72d9\u3048\u305f\u3088\u3046\u306b\u601d\u3046\u3002\u3068\u3044\u3046\u304b\u30b5\u30f3\u30d7\u30eb\u30b1 … <\/p>\n

Read more » “2022\/11\/19(\u571f)”<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3713","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/3713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/comments?post=3713"}],"version-history":[{"count":3,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/3713\/revisions"}],"predecessor-version":[{"id":3716,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/3713\/revisions\/3716"}],"wp:attachment":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/media?parent=3713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/categories?post=3713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/tags?post=3713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}